Biology GK · all questions

Plant Anatomy and Physiology
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Q861

Fruit development in the absence of pollination is called

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Q862

The tendency for release and acceptance of electrons is called the

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Q863

When a plant is planted in soil, the buds present on the roots grow into leafy shoots called

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Q864

Grafting and . . . . . . . . are horticulture techniques used to join parts from two or more plants, so they appear to grow as a single plant.

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Q865

Study the following statements.
1. Excretion of water in the form of liquid droplets from leaves or uninjured plant parts is called gullation.
2. Transpiration help in ascent of sap.
3. Small opening in the leaf meant for gaseous exchange and transpiration is called stomata.
Which of the statements given above are correct ?

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Q866

A significant event in the history of plant disease was the discovery of Professor T. J. Burrill, working on the

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Q867

Which components of light are absorbedby chlorophyll?

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Q868

The gibberellins are chemically related to a rarge group of naturally occurring compounds called

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Q869

The type of layering where a lower branch of a plant is bent down close to the ground and covered with moist soil until the branch produces adventitious roots is called

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Q870

Temporary wilting occurs when there is sufficient water in soil but rate of transpiration

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Q871

Which of the following is an aerial ecological factor?

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Q872

In which of the following bacteria, CO₂ fixation occurs utilizing coenzyme A and in the presence of reduced ferrodoxin which however generate photosynthetically?

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Q873

To increase sugar production in sugarcanes, they are sprayed with

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Q874

Which of the following is the most humid region and the best botanically known part of the entire eastern Himalayas?

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Q875

Application of an antibiotic, Agrimycin, containing 15 % streptomycin and 1.5 % oxytetracyclin is the only effective control of

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Q876

The photosynthetic reaction which does not require light is called as

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Q877

Before the formation of the funicle the hypodermal cells at the apex of the nucellus are differentiated due to large nuclei and dense cytoplasm, which are called

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Q878

Any one parameter is not good enough to demonstrate growth through the life of a flowering plant because

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Q879

Match List-I (Altitudinal zones of eastern Himalayas) with List-II (Floras) and select the correct answer:

List-I	List-II
a. Tropical	1. Rich in conifers and bamboos (Arundinaria spp.)
b. Upper temperate	2. Composed of Shorea robusta with patches of riverain mixed deciduous forests, savannahs and swamps
c. Alpine	3. Composed of Rhododendron and Juniperus species

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Q880

As we progress from the tip to the base of the coleoptile, the concentration of auxin

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