Biology-Objective Related Question Answers
276. Which hormone is responsible for flowering in plants?
Florigen
277. The activity of which hormone help to cover wounded or injured portions of a plant?
Traumatic acid
278. Synthetic growth regulators are commonly known as?
Morphactins
279. The synthetic auxin which is used as a herbicide?
-2.4 - Dichloro Phenoxy Acetic Acid (2; 4-D)
280. The hormone present in coconut milk is?
cytokinin
281. Seed dormancy is due to?
Abscisic acid
282. Plant movement in response to chemical stimulus is called?
Chemotropism
283. The bending of stem towards light is due to?
Phototropism
284. The movement of plant organs in response to the force of gravity is called?
Geotropism
285. Haptotropism means the movement of a plant organ induced by contact with a ......?
Foreign body
286. Growth movements in response to the stimulus of contact are called?
Thigmotropism
287. Growth movements in response to the stimulus of heat or cold is called?
thermotropism
288. Plant movement due to the alternation of day and night are called?
nyctinastic movement
289. Seismonastic movements are in response to ........?
touch or shock stimulus PLANT HORMONES 1) Flowering hormone - Florigen 2) Ripening hormone - Ethylene 3) Wound hormone - Traumatic acid 4) Stress hormone - Abscissic acid
290. Name the plant which produce ozone at the time of photosynthesis?
Thulsi
291. Name the plant that show seismonastic movement?
Touch me not plant (Mimosa plant)
292. The transfer of pollen grains from the anther to the stigma is called?
pollination
293. What is hydrophily?
Pollination by water
294. Pollination by bat is called?
Chiropterophily
295. Pollination between two flowers of one plant is called ......?
gytanogamy
296. Pollination by insects is called ........?
Entomophily
297. What is zoophily?
Pollination by animals
298. Pollination by birds?
Orinithophily
299. The chief pollinators of agrihorticulture crops?
bees
300. Seed dispersal in coconut occurs through ........?
water
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