Plant Anatomy and Physiology MCQs with Answers 2027

Q781

The agrochemicals like pesticides, insecticides and fungicides disturb the whole food chain through a process called

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Q782

Which of the following is an example of a prominent dormancy breaking compound with advantage of wide safety margin between active and toxic dosages?

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Q783

Open question

Which one of the following statements about transport mechanism in plants is correct?

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Q784

Open question

In India, Mishra and Rao (1948) first time reported ecotypic differentiation in

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Q785

Open question

Which of the following pollution types is the most common and dangerous type of environmental pollution that has been reported in all metropolitan cities and industrialised countries of the world?

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Q786

Open question

In which of the following types of endosperm, the first nuclear division of the primary endosperm nucleus is followed by the formation of either a longitudinal or transverse wall in the central cell?

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Q787

Open question

Match List-I with List-II and select the correct answer:

List-I	List-II
a. Gravelly soil	1. Soil contains large particles of rocks together with sand and silt
b. Silt soil	2. Soil directly derived from limestones
c. Loam soil	3. Soil is practically intermediate between sandy and clay soils
d. Calcareous soil	4. Soil composed of sand, silt and clay particles of different sizes in more or less equal proportions

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Q788

Open question

In which of the following ecosystems, secondary and tertiary consumers are usually absent?

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Q789

Open question

During microsporogenesis the middle layers become flattened and crushed at the time of meiotic divisions in the microspore mother cells except in

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Q790

Open question

Which of the following plants do not flower in response to gibberellins?

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Q791

Open question

Pollination is brought about by the movement of water which brings the anthers of male flowers against the stigmas in case of

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Q792

Open question

All diseases caused by viruses are of

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Q793

Open question

The cohesion-tension theory of the translocation of water in plants was first introduced by

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Q794

Open question

Consider the following statements regarding Xenia and choose the correct answer:
1. If a white variety (yy) is pollinated with pollen from a yellow variety (YY), one of the male gametes (Y) will unite with the egg (y) to produce a hybrid embryo (Yy) which will act as a heterozygote for yellow endosperm in the next generation
2. The second male gamete (Y) will unite with the two polar nuclei (y, y) and produces the primary endosperm nucleus (Yyy) which is triploid
3. If a yellow endosperm variety (YY) is crossed with pollen from a white grained variety, the grains produced are white like the pollen parent

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Q795

Open question

Which of the following plant pigments absorbs in red and far-red region of light?

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Q796

Open question

Solar energy is converted into ATP in

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Q797

Open question

Who among the following defined apomixis as the substitution for sexual reproduction of an asexual process which do not involve any nuclear fusion?