Plant Anatomy And Physiology - Study Mode

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[#186] Rhizobium fixes atmospheric nitrogen to ammonia in the presence of the red pigment called

(A) Xanthophyll

(B) Leghemoglobin

(C) Hemoglobin

(D) Phycobilin

Correct Answer

(B) Leghemoglobin

[#187] The most extensive and common method of reproduction in runners, stolons, stem and root tubers, dormant apices, offsets etc., is

(A) Sexual reproduction

(B) Asexual reproduction

(C) Vegetative propagation

(D) Both A and B

Correct Answer

(C) Vegetative propagation

[#188] Match List-I with List-II and select the correct answer: List-I (Diseases) List-II (Symptoms) a. Blights 1. Sudden death of blossoms, young leaves and twigs, usually before they are fully developed b. Pustules 2. Failure of chlorophyll development caused by mineral deficiencies c. Chlorosis 3. Unequal development of chlorophyll in different parts of a leaf, caused chiefly by viruses d. Mosaics 4. Blisters, formed by the rupture of the surface tissues of a host by spore masses or fruiting bodies of patbogenic fungi

(A) a-2, b-1, c-3, d-4

(B) a-3, b-2, c-4, d-1

(C) a-1, b-4, c-2, d-3

(D) a-4, b-2, c-1, d-3

Correct Answer

(C) a-1, b-4, c-2, d-3

[#189] The exoenzymes secreted by the cell in inactive from are known as

(A) Glycogen

(B) Collagen

(C) Protoenzyme

(D) Zymogen

Correct Answer

(D) Zymogen

[#190] Who among the following defined conservation "as the process which is concerned with the use, preservation, and proper management of the natural resources of the earth and their protection from destructive influences, misuse, decay, fire or waste"?

(A) O. P. Odum (1971)

(B) Southwick (1977)

(C) Smith (1978)

(D) None of the above

Correct Answer

(A) O. P. Odum (1971)