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Which of the following act as an antigen, but do not induce antibody production?
1. Haustra
2. Histones
3. Haptens
4. None of these
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Haldane effect refers to
1. More acidity in the blood
2. Less acidity in the blood
3. More basicity in the blood
4. Less basicity in the blood
58%
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The plant whose seeds are known to leave the longest viability period is
1. Carica papaya
2. Triticum aestivum
3. Ziziphus mauritiana
4. Nelumbo nucifera
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Jute is a
1. bast fibre from secondary xylem
2. bast fibre from primary xylem
3. bast fibre from secondary phloem
4. bast fibre from primary phloem
62%
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Chlorosis is produced in the leaves due to the deficiency of Fe, Mg, Mn, S or N of these essential elements, those that are exclusive constituents of chlorophyll molecules are
1. Fe, S
2. N, S
3. Mg, S
4. Mg, N
55%
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Read the following statements and choose the correct option.
I. Leptosporangiate development of sporangium is found in all members Pteropsida.
II. Seed habit is shown by Selaginella.
III. Gnetum leaves are monomorphic and pinnately compound.
IV. Sporic meiosis is found in Volvox, Chlamydomonas and Ulothrix.
Choose the correct option. _
I. Leptosporangiate development of sporangium is found in all members Pteropsida.
II. Seed habit is shown by Selaginella.
III. Gnetum leaves are monomorphic and pinnately compound.
IV. Sporic meiosis is found in Volvox, Chlamydomonas and Ulothrix.
Choose the correct option. _
1. I and IV
2. I and II
3. I, II and IV
4. All of these
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Which of the following characteristics out of I, II and III are exhibited by C4 plants?
I. Kranz anatomy.
II. The product of photosynthesis is oxalo acetic acid.
III. Both PEP carboxylase and ribulose-his phosphate carboxylase act as a carboxylating enzyme.
Choose the correct option.
I. Kranz anatomy.
II. The product of photosynthesis is oxalo acetic acid.
III. Both PEP carboxylase and ribulose-his phosphate carboxylase act as a carboxylating enzyme.
Choose the correct option.
1. I and II, but not III
2. II and III, but not I
3. I and III, but not II
4. All of these
56%
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Match the following column I and II for organismic respiration.
1. A-2 B-3 C-1
2. A-3 B-2 C-1
3. A-1 B-3 C-2
4. A-3 B-1 C-2
70%
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