The hormone involved in the regulation of florigen synthesis is

• ethylene

• zeatin

• cytokinin

• gibberrellin

Statement I : Sugar beet, cabbage, carrot like plants are monocarpic.

Statement II : Both vernalisation and photoperiodism are related to flowering.

• Statement I is correct, but Statement II is incorrect

• Statement II is correct, but Statement I is incorrect.

• Both statements are correct.

• Both statements are incorrect.

Fruit ripening is promoted by the hormone that also

• promotes thinning of fruits in cherry and walnut

• induce parthenocarpy in tomato

• promote flowering in lemma

• induce dormancy

The correct sequence of cellular growth stages is

• division $\to$ differentiation $\to$ elongation

• differentiation $\to$ division $\to$ elongation

• division $\to$ elongation $\to$ differentiation

• elongation $\to$ differentiation $\to$ division

Auxin was first named by

• C Darwin

• FW Went

• Alexopolus

• KV Thimann

Phototropic curvature in Avena coleoptile is the result of uneven distribution of

• auxin

• starch

• gibberellins

• phytochrome

Study of bakanae disease of rice led to discovery of

• auxins

• bakery rice

• Both (a) and (b)

• gibberellins

238.

Equipment used for the measurement of growth in plants is known as

• respirometer

• auxanometer

• atmometer

• potometer

The pH of protolasm is

• 6.0

• 6.8

• 7.8

• 8.2

The hormone, which prevents abscission is

• IBA

• ABA

• NAA

• Cytokinin