Abscisic Acid

Q.

What is respiratory climatic?

Q.

Full form of aba according to biology

Q.

Why dont seeds germinate inside the seed packet?

Q.

Why do many viable seeds not germinate even when supplied with all the essentials?

Q. Which of the following methods can be used to break seed dormancy artificially?

1. Chilling of seeds
2. Application of thiourea
3. Exposing to certain wavelengths of light
4. All the above
   

Q.

Do seeds die if they freeze?

Q.

What fruits make bananas ripen faster?

Q.

Can old seeds germinate?

Q. Abscisic acid is involved in _____.

1. Inducing seed dormancy
2. Inducing senescence of leaves
3. Inhibiting plant metabolism
4. All of these

Q. Which of the following plant growth regulator is a derivative of carotenoid?

1. Gibberellic acid
2. Cytokinin
3. Abscisic acid
4. Indole-3-acetic acid

Q. is a phytohormone which plays an important role in regulating abscission and dormancy.

1. auxin
2. cytokinin
3. gibberellin
4. abscisic acid

Q. Which of the following PGR is also known as anti-gibberellin?

1. Auxin
2. Ethylene
3. Abscisic acid
4. Cytokinin

Q.

"Senescence" is promoted by the application of _____.

1. Ethylene

2. 6-Benzylaminopurine

3. Indole-3-butyric acid

4. 2, 4-Dichlorophenoxyacetic acid

Q. Ethylene causes apical hook formation in dicot seedlings, promotes senescence and abscission of plant leaves and flowers.

1. True
2. False

Q. Which of the following statements is/are correct concerning seed dormancy?
I. It is a result of endogenous control.
II. Delayed germination is advantageous to plants.
III. Impermeable and hard seed coat results in the dormancy of the seed.

1. Only II
2. Only III
3. I and III
4. I, II and III