Biology GK · all questions

Plant Anatomy and Physiology
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Q601

In which of the following lake types the surface temperature varies above and below 4° C?

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Q602

The reaction centre -P₆₈₀ in non-cyclic electron transport pathway becomes photoexcited and exudes an electron with a gain of energy. The electron then is immediately accepted by

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Q603

According to Hanson and Churchill (1965), a community type or abstract community may be defined as

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Q604

Which of the following is an example of iron bacteria?

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Q605

The reaction of the β-oxidation of fatty acids and the conversion of acetate units of acetyl CoA to glyoxylate and maltate were discovered to take place in microbodies termed as

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Q606

Match List-I (Host plants) with List-II (Disease resistant varieties) and select the correct answer:

List-I	List-II
a. Rice	1. T 41, TKM, CO 26
b. Wheat	2. Coorg and Kents
c. Sugarcane	3. Lermo Rojo, 271-1, 11-8
d. Coffee	4. BO3, COS 561, CO 224

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Q607

The amount of energy that is available to accomplish work is known as

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Q608

In a bisexual flower, if androecium and gynoecium mature at different times, the phenomenon is known as

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Q609

Match List-I (Pollutants) with List-II (Pathological effects on man) and select the correct answer:

List-I	List-II
a. Ammonias	1. Cause emphysema, eye irritations and possibly cancer
b. Arsines	2. Inflame upper respiratory passages
c. Carbon monoxides	3. Reduce oxygen carrying capacity of blood
d. Suspended particles (ash, soot, smoke)	4. Break down red cells in blood, damage kidneys, cause jaundice

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Q610

In biological terms, . . . . . . . . is a relationship between two organisms in which one organism benefits and the other is unaffected?

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Q611

The enlargements formed as a result of accelerated growth of the host tissues invaded by a pathogen are known as

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Q612

Gradual but steady origin of plant community takes place due to the phenomena of

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Q613

Which of the following are generally regarded as 'top' carnivores?

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Q614

The lowermost cell of the suspensor adjacent to the embryonal cell is known as

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Q615

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

List-I	List-II
a. Maintenance of cell permeability	1. Potassium
b. Opening and closing stomata	2. Calcium
c. Pollen germination	3. Magnesium
d. Component of chlorophyll	4. Boron

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Q616

The sunlight energy used by green plants in photosynthesis is transformed into

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Q617

Which of the following contain enzymes for cellular respiration?

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Q618

Which of the following are shortt-lived and thus play no role in the perennation of the pathogen in red rot of sugarcane?

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Q619

The best control measure for com smut disease is

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Q620

Role of chlorophyll in photosynthesis is

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