Biology GK · all questions

Plant Anatomy and Physiology
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Q461

The enzymes for the Kreb's cycle are located in the

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Q462

The photoconversions of the Pr and Pfr forms involve electronic changes in ring I, with

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Q463

Consider the following statements.
Assertion (A) Cuscuta (Amarbel) is an example of parasitic angiosperm.
Reason (R) It gets its nutrition from the leaves of the host plant.
Choose your answer:

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Q464

The endosperm of angiosperms is developed from

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Q465

The major portion of a maize grain is occupied by a large starchy endosperm surrounded by a special one-cell thick layer called

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Q466

Pollination by birds is called

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Q467

The plants which occur at higher altitudes are known as

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Q468

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

List-I (Diseases)	List-II (Causal agents)
a. Smut of sugarcane	1. Podosphaera leucotricha
b. White rust of crucifers	2. Albugo candida
c. Apple scab	3. Claviceps purpurea
d. Ergot of rye	4. Ustilago scitaminae

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Q469

An enzyme and a coenzyme together form an enzymatically conjugated protein called the

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Q470

Copper is associated with . . . . . . . . mitochondrial enzymes.

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Q471

The organisms responsible for the process of ammonification include

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Q472

Which one of the following is not a plant hormone?

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Q473

Match List I (Organic acids) with List II (Respiratory Quotients) and choose the correct answer:

List-I	List-II
a. Oxalic acid	1. 1.33
b. Tartaric acid	2. 1.6
c. Malic acid	3. 4.0

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Q474

In which of the following modes of entry, the pollen tube enters the ovule through the side of the integument nearest to the placenta, curves round the channel of the micropyle and reaches the embryo sac through the nucellus ?

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Q475

In many hermaphrodite or bisexual flowers the anther and stigma mature at different times and thus avoid self-pollination. This condition is known as

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Q476

Match List-I (Regions) with List-II (Names of the grassland biome) and select the correct answer:

List-I	List-II
a. Grassland of Eurasia	1. Prairies
b. Grassland of Brazil	2. Steppes
c. Grassland of India	3. Savanna
d. North American and Canadian grassland	4. Llanos

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Q477

During light reaction of photosynthesis

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Q478

Pollination usually takes place at which of the following stages of the microspore?

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Q479

During respiration energy is produced in the form of

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Q480

When a siliqua fruit becomes much shorter and flattened and as broad as it is long with a few seeds, it is called

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