This document contains an online quiz about plant hormones. The quiz consists of 10 multiple choice questions testing knowledge about different plant hormones including auxin, cytokinin, ethylene, abscisic acid, and gibberellins. The questions cover topics like how auxin and cytokinins promote plant growth, what hormones are produced during fruit ripening and seed development, and which hormones control responses like phototropism, bud dormancy, and lateral stem growth.

1. ONLINE QUIZ MAKER
Submitted by
Sujalekshmy B S
Natural Science

2. 1. Auxin promotes growth in plants by
A. increasing the plasticity of plant cell walls.
B. stimulating the uptake of water by seeds
C. causing elongation of stems.
D. increasing the rate of photosynthesis.
E. promoting root tip growth.
2. Plants synthesize auxin from the amino acid
A. cystine
B. phenylalanine
C. ornithine
D. tryptophan
E. lysine
3. This plant hormone promotes stem elongation and enzyme production in developing seeds.
A. auxin
B. cytokinin
C. ethylene
D. abscisic acid
E. gibberellins
4. Which hormone is produced by aging fruit?
A. auxin
B. cytokinin
C. ethylene

3. D. abscisic acid
E. gibberellins
5. The hormone which promotes lateral bud dormancy IS
A. auxin
B. cytokinin
C. ethylene
D. abscisic acid
E. gibberellins
6. The plant hormone which inhibits the effects of other hormones is
A. auxin
B. cytokinin
C. ethylene
D. abscisic acid
E. gibberellins
7. Cytokinins
A. This hormone causes leaves to age and fall off of the plant
B. This hormone would cause the stem to grow towards a source of light
C. This hormone is produced in the apical portion of stems
D. Tomatoes are stimulated to ripen when exposed to this hormone
E. Cell division is stimulated by this hormone
8. The hormone responsible for phototropic responses in the growing tips of plants is
A. auxin
B. cytokinin
C. gibberellins

4. D. ethylene
E. abscisic acid
9. Lateral stem development is controlled by the relative levels of
A. cytokinins and auxins
B. abscisic acid and auxins
C. auxins and gibberellins
D. auxins and ethylene
E. cytokinins and ethylene
10. Tomatoes can be artificially ripened through the use of
A. auxin
B. cytokinin
C. gibberellins
D. ethylene
E. abscisic acid