In botany · Fruits are the means by which flowering plants (also known as angiosperms) · In common language usage, "fruit" normally means the seed-associated
In botany · Fruits are the means by which flowering plants (also known as angiosperms) · In common language usage, "fruit" normally means the seed-associated
This is a general presentation on fruit types and the specific information used to distinguish them. In my class, this input was provided prior to a full-on exploration of as many different types of fruit we could get our hands on.
In a very rare move for me... images were shamelessly borrowed from all over for educational purpose.
seed is scientifically the mature embryo.
these powerpoint slides include the basic concepts of seed,its importance, parts of seed, composition,seed structure, seed development and embryogenesis.
Classification of Fruits
A. On the basis of Growth Habit
1) Tree. e.g. Mango, Litchi.
2) Herbaceous. e.g. Banana, Papaya.
3) Shrub. e.g. Lemon. 4) Vine. e.g. Grape, Strawberry.
B. On the basis of Life Cycle
1) Annual (monocarpic). e.g. Banana, Pineapple.
2) Perennial (Polycarpic). e.g. Mango.
C. On the basis of Origin of Fruit
1) True fruit. e.g. Mango.
2) False fruit. e.g. Apple.
3) Parthenocarpy (Development of ovary takes place without fertilization) fruit. e.g. Banana.
D. On the basis of Pollination
1) Self pollinated. e.g. Mango.
2) Cross pollinated. e.g. Papaya.
E. On the basis of Climatic Requirement
1) Tropical fruit. e.g. Mango.
2) Subtropical fruit. e.g. Guava.
3) Temperate fruit. e.g. Apple.F.
On the basis of Inorescence of Fruit
1) Simple fruit. e.g. Mango, Litchi.
2) Aggregate fruit. e.g. Custard apple.
3) Multiple fruit. e.g. Jackfruit.
G. On the basis of Fruit Production Season
1) Mrigbahar: JuneAugust. e.g. Guava.
2) Ambebahar: FebruaryMarch. e.g. Mango, Litchi.
3) Year round. e.g. Papaya, Banana.
H. On the basis of Respiratory pattern of Fruit
1) Climatic Fruit. e.g. Mango, Banana.
2) Nonclimatic fruit. e.g. Coconut.
I. On the basis of Texture of Pericarp
1) Dry fruit.
i. Dry dehiscence. e.g. Tamarind.
ii. Dry indehiscence. e.g. Cashew nut.
iii. Schizocarpic fruit. e.g. wild carrot.
2) Fleshy.
i. Drupe. e.g. Mango.
ii. Berry. e.g. Banana.
iii. Pepo. e.g. Water melon.
iv. Pome. e.g. Apple.
v. Hesperidium. e.g. Citrus.
J. On the basis of Light Requirement
1) Short day fruit.
2) Long day fruit.
K. On the basis of Leaves Drop
1) Evergreen. e.g. Mango, Jackfruit.
2) Deciduous. e.g. Deshy amra.
L. On the basis of Cotyledon
1) Monocot. e.g. Banana.
2) Dicot. e.g. Mango.
M. On the basis of Time of growing after Planting
1) Quick growing. e.g. Banana.
2) Medium growing. e.g. Guava, Pomegranate.
3) Delay growing. e.g. Mango, Jackfruit.
N. On the basis of Height
1) Tall. e.g. Mango.
2) Intermediate. e.g. Guava.
3) Dwarf. e.g. Strawberry.
O. On the basis of Water Relation
1) Mesophytic. e.g. Mango.
2) Zerophytic. e.g. Pineapple, Date palm.
3) Hydrophytic. e.g. Water chestnut.
This presentation is based on the anatomy of fruit, types of fruit, their description and the reproductive part of fruit which is seed, and the anatomy of seed and the types of germination.
This is a general presentation on fruit types and the specific information used to distinguish them. In my class, this input was provided prior to a full-on exploration of as many different types of fruit we could get our hands on.
In a very rare move for me... images were shamelessly borrowed from all over for educational purpose.
seed is scientifically the mature embryo.
these powerpoint slides include the basic concepts of seed,its importance, parts of seed, composition,seed structure, seed development and embryogenesis.
Classification of Fruits
A. On the basis of Growth Habit
1) Tree. e.g. Mango, Litchi.
2) Herbaceous. e.g. Banana, Papaya.
3) Shrub. e.g. Lemon. 4) Vine. e.g. Grape, Strawberry.
B. On the basis of Life Cycle
1) Annual (monocarpic). e.g. Banana, Pineapple.
2) Perennial (Polycarpic). e.g. Mango.
C. On the basis of Origin of Fruit
1) True fruit. e.g. Mango.
2) False fruit. e.g. Apple.
3) Parthenocarpy (Development of ovary takes place without fertilization) fruit. e.g. Banana.
D. On the basis of Pollination
1) Self pollinated. e.g. Mango.
2) Cross pollinated. e.g. Papaya.
E. On the basis of Climatic Requirement
1) Tropical fruit. e.g. Mango.
2) Subtropical fruit. e.g. Guava.
3) Temperate fruit. e.g. Apple.F.
On the basis of Inorescence of Fruit
1) Simple fruit. e.g. Mango, Litchi.
2) Aggregate fruit. e.g. Custard apple.
3) Multiple fruit. e.g. Jackfruit.
G. On the basis of Fruit Production Season
1) Mrigbahar: JuneAugust. e.g. Guava.
2) Ambebahar: FebruaryMarch. e.g. Mango, Litchi.
3) Year round. e.g. Papaya, Banana.
H. On the basis of Respiratory pattern of Fruit
1) Climatic Fruit. e.g. Mango, Banana.
2) Nonclimatic fruit. e.g. Coconut.
I. On the basis of Texture of Pericarp
1) Dry fruit.
i. Dry dehiscence. e.g. Tamarind.
ii. Dry indehiscence. e.g. Cashew nut.
iii. Schizocarpic fruit. e.g. wild carrot.
2) Fleshy.
i. Drupe. e.g. Mango.
ii. Berry. e.g. Banana.
iii. Pepo. e.g. Water melon.
iv. Pome. e.g. Apple.
v. Hesperidium. e.g. Citrus.
J. On the basis of Light Requirement
1) Short day fruit.
2) Long day fruit.
K. On the basis of Leaves Drop
1) Evergreen. e.g. Mango, Jackfruit.
2) Deciduous. e.g. Deshy amra.
L. On the basis of Cotyledon
1) Monocot. e.g. Banana.
2) Dicot. e.g. Mango.
M. On the basis of Time of growing after Planting
1) Quick growing. e.g. Banana.
2) Medium growing. e.g. Guava, Pomegranate.
3) Delay growing. e.g. Mango, Jackfruit.
N. On the basis of Height
1) Tall. e.g. Mango.
2) Intermediate. e.g. Guava.
3) Dwarf. e.g. Strawberry.
O. On the basis of Water Relation
1) Mesophytic. e.g. Mango.
2) Zerophytic. e.g. Pineapple, Date palm.
3) Hydrophytic. e.g. Water chestnut.
This presentation is based on the anatomy of fruit, types of fruit, their description and the reproductive part of fruit which is seed, and the anatomy of seed and the types of germination.
The ovules after fertilization develops into seeds.
Consist of an embryo, with or without endosperm and a seed coat.
Found inside a fruit.
Plants like Pteridophytes and Bryophytes do not produce seeds.
Gymnosperms do not have ovaries and produce naked seeds.
Angiosperms produce seeds having protective seed coat, food reserves(endosperm) and embryo.
HIGH SCHOOL TOPIC THAT DISCUSSES SEED IN PLANTS AND ITS TYPES.IT ALSO INCLUDES ACTIVITIES THE TEACHER CAN ENGAGE THE STUDENTS WITH THROUGH OUT THE LEARNING PROCESS. INTERACTIVE VIDEOS ARE ALSO INCLUDED AND SOME TAKE AWAY QUESTIONS AT THE END OF THE PRESENTATION. THE PRESENTATION ALSO DISCUSSES THE PARTS OF A SEED AND THEIR FUNCTIONS FOR C;LARITY TO THE LEARNERS.
It is called as “living fossil”
The whole order is extincted except one species Ginkgo biloba
This order was occurred in Triassic periods of Mesozoic age (200,000,000 years ago)
This order consists of 16 genera and many species (all in fossil forms except one)
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
Introduction:
RNA interference (RNAi) or Post-Transcriptional Gene Silencing (PTGS) is an important biological process for modulating eukaryotic gene expression.
It is highly conserved process of posttranscriptional gene silencing by which double stranded RNA (dsRNA) causes sequence-specific degradation of mRNA sequences.
dsRNA-induced gene silencing (RNAi) is reported in a wide range of eukaryotes ranging from worms, insects, mammals and plants.
This process mediates resistance to both endogenous parasitic and exogenous pathogenic nucleic acids, and regulates the expression of protein-coding genes.
What are small ncRNAs?
micro RNA (miRNA)
short interfering RNA (siRNA)
Properties of small non-coding RNA:
Involved in silencing mRNA transcripts.
Called “small” because they are usually only about 21-24 nucleotides long.
Synthesized by first cutting up longer precursor sequences (like the 61nt one that Lee discovered).
Silence an mRNA by base pairing with some sequence on the mRNA.
Discovery of siRNA?
The first small RNA:
In 1993 Rosalind Lee (Victor Ambros lab) was studying a non- coding gene in C. elegans, lin-4, that was involved in silencing of another gene, lin-14, at the appropriate time in the
development of the worm C. elegans.
Two small transcripts of lin-4 (22nt and 61nt) were found to be complementary to a sequence in the 3' UTR of lin-14.
Because lin-4 encoded no protein, she deduced that it must be these transcripts that are causing the silencing by RNA-RNA interactions.
Types of RNAi ( non coding RNA)
MiRNA
Length (23-25 nt)
Trans acting
Binds with target MRNA in mismatch
Translation inhibition
Si RNA
Length 21 nt.
Cis acting
Bind with target Mrna in perfect complementary sequence
Piwi-RNA
Length ; 25 to 36 nt.
Expressed in Germ Cells
Regulates trnasposomes activity
MECHANISM OF RNAI:
First the double-stranded RNA teams up with a protein complex named Dicer, which cuts the long RNA into short pieces.
Then another protein complex called RISC (RNA-induced silencing complex) discards one of the two RNA strands.
The RISC-docked, single-stranded RNA then pairs with the homologous mRNA and destroys it.
THE RISC COMPLEX:
RISC is large(>500kD) RNA multi- protein Binding complex which triggers MRNA degradation in response to MRNA
Unwinding of double stranded Si RNA by ATP independent Helicase
Active component of RISC is Ago proteins( ENDONUCLEASE) which cleave target MRNA.
DICER: endonuclease (RNase Family III)
Argonaute: Central Component of the RNA-Induced Silencing Complex (RISC)
One strand of the dsRNA produced by Dicer is retained in the RISC complex in association with Argonaute
ARGONAUTE PROTEIN :
1.PAZ(PIWI/Argonaute/ Zwille)- Recognition of target MRNA
2.PIWI (p-element induced wimpy Testis)- breaks Phosphodiester bond of mRNA.)RNAse H activity.
MiRNA:
The Double-stranded RNAs are naturally produced in eukaryotic cells during development, and they have a key role in regulating gene expression .
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
Multi-source connectivity as the driver of solar wind variability in the heli...Sérgio Sacani
The ambient solar wind that flls the heliosphere originates from multiple
sources in the solar corona and is highly structured. It is often described
as high-speed, relatively homogeneous, plasma streams from coronal
holes and slow-speed, highly variable, streams whose source regions are
under debate. A key goal of ESA/NASA’s Solar Orbiter mission is to identify
solar wind sources and understand what drives the complexity seen in the
heliosphere. By combining magnetic feld modelling and spectroscopic
techniques with high-resolution observations and measurements, we show
that the solar wind variability detected in situ by Solar Orbiter in March
2022 is driven by spatio-temporal changes in the magnetic connectivity to
multiple sources in the solar atmosphere. The magnetic feld footpoints
connected to the spacecraft moved from the boundaries of a coronal hole
to one active region (12961) and then across to another region (12957). This
is refected in the in situ measurements, which show the transition from fast
to highly Alfvénic then to slow solar wind that is disrupted by the arrival of
a coronal mass ejection. Our results describe solar wind variability at 0.5 au
but are applicable to near-Earth observatories.
Cancer cell metabolism: special Reference to Lactate PathwayAADYARAJPANDEY1
Normal Cell Metabolism:
Cellular respiration describes the series of steps that cells use to break down sugar and other chemicals to get the energy we need to function.
Energy is stored in the bonds of glucose and when glucose is broken down, much of that energy is released.
Cell utilize energy in the form of ATP.
The first step of respiration is called glycolysis. In a series of steps, glycolysis breaks glucose into two smaller molecules - a chemical called pyruvate. A small amount of ATP is formed during this process.
Most healthy cells continue the breakdown in a second process, called the Kreb's cycle. The Kreb's cycle allows cells to “burn” the pyruvates made in glycolysis to get more ATP.
The last step in the breakdown of glucose is called oxidative phosphorylation (Ox-Phos).
It takes place in specialized cell structures called mitochondria. This process produces a large amount of ATP. Importantly, cells need oxygen to complete oxidative phosphorylation.
If a cell completes only glycolysis, only 2 molecules of ATP are made per glucose. However, if the cell completes the entire respiration process (glycolysis - Kreb's - oxidative phosphorylation), about 36 molecules of ATP are created, giving it much more energy to use.
IN CANCER CELL:
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
Unlike healthy cells that "burn" the entire molecule of sugar to capture a large amount of energy as ATP, cancer cells are wasteful.
Cancer cells only partially break down sugar molecules. They overuse the first step of respiration, glycolysis. They frequently do not complete the second step, oxidative phosphorylation.
This results in only 2 molecules of ATP per each glucose molecule instead of the 36 or so ATPs healthy cells gain. As a result, cancer cells need to use a lot more sugar molecules to get enough energy to survive.
introduction to WARBERG PHENOMENA:
WARBURG EFFECT Usually, cancer cells are highly glycolytic (glucose addiction) and take up more glucose than do normal cells from outside.
Otto Heinrich Warburg (; 8 October 1883 – 1 August 1970) In 1931 was awarded the Nobel Prize in Physiology for his "discovery of the nature and mode of action of the respiratory enzyme.
WARNBURG EFFECT : cancer cells under aerobic (well-oxygenated) conditions to metabolize glucose to lactate (aerobic glycolysis) is known as the Warburg effect. Warburg made the observation that tumor slices consume glucose and secrete lactate at a higher rate than normal tissues.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
(May 29th, 2024) Advancements in Intravital Microscopy- Insights for Preclini...Scintica Instrumentation
Intravital microscopy (IVM) is a powerful tool utilized to study cellular behavior over time and space in vivo. Much of our understanding of cell biology has been accomplished using various in vitro and ex vivo methods; however, these studies do not necessarily reflect the natural dynamics of biological processes. Unlike traditional cell culture or fixed tissue imaging, IVM allows for the ultra-fast high-resolution imaging of cellular processes over time and space and were studied in its natural environment. Real-time visualization of biological processes in the context of an intact organism helps maintain physiological relevance and provide insights into the progression of disease, response to treatments or developmental processes.
In this webinar we give an overview of advanced applications of the IVM system in preclinical research. IVIM technology is a provider of all-in-one intravital microscopy systems and solutions optimized for in vivo imaging of live animal models at sub-micron resolution. The system’s unique features and user-friendly software enables researchers to probe fast dynamic biological processes such as immune cell tracking, cell-cell interaction as well as vascularization and tumor metastasis with exceptional detail. This webinar will also give an overview of IVM being utilized in drug development, offering a view into the intricate interaction between drugs/nanoparticles and tissues in vivo and allows for the evaluation of therapeutic intervention in a variety of tissues and organs. This interdisciplinary collaboration continues to drive the advancements of novel therapeutic strategies.
(May 29th, 2024) Advancements in Intravital Microscopy- Insights for Preclini...
Fruits: Parts and Classification
1.
2. FRUIT
•A product of flowers usually
developed as a result of flower
being pollinated.
•Referred to as “ripened ovary”.
•Its primary function is to distribute
seeds to new areas where the plant
might grow (seed dispersal vehicle).
6. STRUCTURE
Pericarp is the ovary wall
which surrounds the seed (seed
container). It has three regions:
exocarp/epicarp, mesocarp,
endocarp.
7. STRUCTURE
Parts of the Pericarp:
1.Exocarp/Epicarp - outer part, skin
of the fruit
2.Mesocarp - middle part, flesh of the
fruit.
3.Endocarp - inner part, encloses the
seed.
13. CLASSIFICATIONS
I. Simple Fruits
• Developed from one single ovary
containing one or more carpels
and may or may not include
additional accessory structure.
14. SIMPLE FRUITS
A.Fleshy Fruits
• Its pericarp and accessory parts
develop into succulent tissues.
• One or more layers of the pericarp
become soft during ripening.
• Its pericarp is fleshy at maturity (soft
pericarp).
15. FLESHY FRUITS
1.Berries
• Have one to many seeds and a
pericarp that becomes soft and often
sweet and slimy as it matures.
• Grapes, eggplant, tomatoes, green
peppers, blueberries, mangosteens,
guavas, bananas, ampalaya, papaya
16.
17. FLESHY FRUITS
2. Hesperidia
• Have leathery pericarp that
produces fragrant oils and soft
segmented pulp.
• All citrus fruits
18.
19. FLESHY FRUITS
3.Pepos
• Have thick or hard exocarp.
• Have a receptacle that partially or
completely encloses the ovary.
• Pumpkins, cucumber, squashes,
cantaloupes, watermelons
20.
21. FLESHY FRUITS
5.Pomes (Accessory Fruit)
• Its bulk is formed from a swollen
receptacle.
• Have a thin exocarp and a papery
cartilaginous mesocarp.
• Pears, apples
22.
23. SIMPLE FRUITS
B.Dehiscent Dry Fruits
• Have hard texture and wood-like
leathery appearance.
• Split open at maturity to shed
seeds.
24. DEHISCENT DRY FRUITS
1. Follicles
• Have single carpel.
• Open along one seam when the
seeds are to be released.
• Milkweed, columbines, peonies,
magnolia
25.
26. DEHISCENT DRY FRUITS
2. Legumes/Pods
• Derive from a single carpel.
• Split into two seed-bearing halves.
• Garden peas, beans, peanut,
mesquite
27.
28. 3.Siliques
• Seeds reside on a partition
between halves of the ovary.
• Mustard plant, watercress
DEHISCENT DRY FRUITS
29.
30. DEHISCENT DRY FRUITS
4.Capsules
• Derived from compound ovaries.
• Two or more carpels, split along
seams or forming caps or pores.
• Eucalyptus, horse chestnut, kapok
31.
32. SIMPLE FRUITS
C.Indehiscent Dry Fruits
• Have hard texture and wood-like
leathery appearance.
• Remain closed at maturity, thus,
leaves their seeds inside them
35. INDEHISCENT DRY FRUITS
2. Achenes
• Have thin pericarps and solitary
seed.
• Seeds connect to the pericarp only
at the base.
• Sunflowers, buttercups
36.
37. INDEHISCENT DRY FRUITS
3. Samaras
• Have thin pericarps.
• Seeds occur in pairs and have
wings that allow dispersal by the
wind.
• Elm, ash, maple, narra
38.
39. INDEHISCENT DRY FRUITS
4. Caryopses/Grains
• Have hard pericarp fastened to the
embryo all the way around.
• Grass family
40.
41. CLASSIFICATIONS
II. Aggregate Fruit
• From one flower that produces
many tiny fruits (fruitlets)
clustered together (etaerios).
• Blackberries, strawberries,
raspberries
42.
43. CLASSIFICATIONS
III.Multiple Fruit
• From many different flowers or
cluster of flowers develop closely to
form a bigger fruit.
• Pineapples, mulberries, figs,
breadfuits, langka, atis, durian
