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Cytokinins

Cytokinins ar...

Question

Cytokinins are found in ___

A

Germinating seed

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B

Stem

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C

Embryo

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D

Xylem

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Solution

The correct options are
A
Germinating seed

C
Embryo

Cytokinins are plant hormones that increases cell division by stimulating the process of mitosis. They are made naturally by plants but are synthesised artificially in labs too. Cytokinins are naturally found in germinating seeds, developing fruit and embryo.

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Q. The most appropriate reason for taking germinating seeds in the experiment to show that carbon dioxide is produced during respiration, is :
(1) germinating seeds create high temperature
(2) germinating seeds are easy to handle
(3) germinating seeds are living things
(4) germinating seeds are in dormant to state

During seed germination, an embryo develops into a ___.

Stratification of seeds may promote their germination

Reason: Stratification promote gibberellin and cytokinins

Q. Pick out the correct statements.
(A) Cytokinins specially help in delaying senescence.
(B) Auxins are involved in regulating apical dominance.
(C) Ethylene is especially useful in enhancing seed germination.
(D) Gibberellins are responsible for immature falling of leaves.

Q. Germination activates the embryo of the seed.

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