Dr. sheeja mammalia slide share
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This document discusses two Australian mammals - the echidna and kangaroo. It provides details on the echidna's physical characteristics such as its spiny coat, tongue adapted for eating ants, and laying eggs. Kangaroos are described as having powerful hind legs adapted for leaping, a pouch for carrying young, and giving birth to underdeveloped young that climb into the pouch. Both echidnas and kangaroos are unique mammals found exclusively in Australia.
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3. Types of mammalian teeth and their functions for different diets.
4. Classification systems for placental structure and layers between fetal and maternal blood.
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The recent surge in pro-Palestine student activism has prompted significant responses from universities, ranging from negotiations and divestment commitments to increased transparency about investments in companies supporting the war on Gaza. This activism has led to the cessation of student encampments but also highlighted the substantial sacrifices made by students, including academic disruptions and personal risks. The primary drivers of these protests are poor university administration, lack of transparency, and inadequate communication between officials and students. This study examines the profound emotional, psychological, and professional impacts on students engaged in pro-Palestine protests, focusing on Generation Z's (Gen-Z) activism dynamics. This paper explores the significant sacrifices made by these students and even the professors supporting the pro-Palestine movement, with a focus on recent global movements. Through an in-depth analysis of printed and electronic media, the study examines the impacts of these sacrifices on the academic and personal lives of those involved. The paper highlights examples from various universities, demonstrating student activism's long-term and short-term effects, including disciplinary actions, social backlash, and career implications. The researchers also explore the broader implications of student sacrifices. The findings reveal that these sacrifices are driven by a profound commitment to justice and human rights, and are influenced by the increasing availability of information, peer interactions, and personal convictions. The study also discusses the broader implications of this activism, comparing it to historical precedents and assessing its potential to influence policy and public opinion. The emotional and psychological toll on student activists is significant, but their sense of purpose and community support mitigates some of these challenges. However, the researchers call for acknowledging the broader Impact of these sacrifices on the future global movement of FreePalestine.
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𝐃𝐢𝐬𝐜𝐮𝐬𝐬 𝐭𝐡𝐞 𝐄𝐏𝐏 𝐂𝐮𝐫𝐫𝐢𝐜𝐮𝐥𝐮𝐦 𝐢𝐧 𝐭𝐡𝐞 𝐏𝐡𝐢𝐥𝐢𝐩𝐩𝐢𝐧𝐞𝐬:
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𝐄𝐱𝐩𝐥𝐚𝐢𝐧 𝐭𝐡𝐞 𝐍𝐚𝐭𝐮𝐫𝐞 𝐚𝐧𝐝 𝐒𝐜𝐨𝐩𝐞 𝐨𝐟 𝐚𝐧 𝐄𝐧𝐭𝐫𝐞𝐩𝐫𝐞𝐧𝐞𝐮𝐫:
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Dr. sheeja mammalia slide share
- 1. DR. SHEEJA V.R ASSISTANT PROFESSOR DEPT. OF ZOOLOGY IQBAL COLLEGE PERINGAMMALA ECHIDNA KANGAROO MAMMALS
- 2. MAMMALS
- 3. Echidna (Tachyglossus) ● Prototherian (Egg laying mammal) ● Commonly called spiny anteater ● Restricted to Australia & Tasmania ● Nocturnal and feeds on ants and termites ● Dorsal side of the body is covered with strong pointed spines and hairs. Ventral side-hairs. Spines are modified hairs
- 4. Echidna contd….. ● Teeth absent ● Tongue- long , protrusible and sticky. Serrations on the upper surface of the tongue helps to grind ants ● Saliva-sticky and neutrilizes the formic acid of the ants ● Eyes small and without nictitating membrane ● External ears are absent ● Tail is very short and vestigial ● When threatened tachyglossus can roll up into a ball for self protection
- 5. ● The digits of the hind limbs are turned outwards and backwards ● Toilet claw-the second digit of the hind limb bears this structure which is used to clean hairs and spines. ● Tarsal spur- present in the tarsus of the hind limb of the male. It is an organ of defense Echidna contd…..
- 6. Echidna contd….. ● Limbs are short with broad feet and the five digits are provided with sharp claws-helps to burrow and break open the ant hills. ● The female develops a provisional abdominal pouch and she lays egg into it for incubation ● The young hatches out in an immature condition in the pouch and is fed with milk from the mammary glands.
- 7. KANGAROO Metatherians –Marsupials- abdominal pouch – marsupium Endemic to the country of Australia. National symbol of Australia.
- 8. KANGAROO - FEATURES Herbivorous and terrestrial in habitat. The head, neck and forelimbs are small The hind part of the body, legs and tail are large. The foot has four toes. Fourth toe is very large-armed with claws used in fighting
- 9. Features contd….. Hind limbs are long powerful and used in leaping and kicking. Kangaroos can move by rapid leaps of over 25 feet. The forelimbs have five clawed digits. They are used as hands ,as support for the body while feeding and for boxing. Tail is large long and thick at the base. It serves a third leg in locomotion and at rest. It is used as balancer during leaping. On the ventral side of the abdomen a large marsupium supported by marsupial bones of the pelvic girdle is
- 10. Features contd….. Gestation period is 30-40 days. Young ones are born as immature. After birth new born marsupials crawl up the body of their mother and attach themselves to a nipple which is located inside the marsupium. They are fed with milk from the mammmary gland. When they are about 4 months old they crawl out and lead a free life.