Haldane effect refers to
More acidity in the blood
Less acidity in the blood
More basicity in the blood
Less basicity in the blood
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 molecule are
Fe, S
N,S
Mg, S
Mg, N
Read the following statements and choose the correct option.
I. Leptosporangiate development of sporangium is found in all membersPteropsida.
II. Seed habit is shown by sellaginella.
III. Gnetum leaves are monomorphic and pinnately compound.
IV. Sporic meiosis is found in Volvolx, Chalmydomonas and Ulothrix.
Choose the correct option.
I and IV
I and II
I, II and IV
All of these
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-bis phosphate carboxylase act as carboxylating enzyme.
Choose the correct option.
I and II, but not III
II and III, but not I
I and III, but not II
All of these
Match the following column I and II for organismic respiration.
Column I | Column II |
A. Respiration in bacteria | 1. Mitochondria |
B. Respiration in cyanobacteria | 2. Cytoplasmic membrane |
C. Respiration in eukaryotic cell | 3. Mesosomes |
A-2, B-3, C-1
A-3, B-2, C-1
A-1, B-3, C-2
A-3, B-1, C-2
Compare the statements I and II and choose the correct option.
Statement (I) Auxin promotes apical dominance by suppressing the activity of lateral buds.
Statement (II) In moriculture, periodic pruning of shoot tips is done to make mulberry plants bushy.
Choose the correct options
I is false, but II is true
II is false, but I is true
Both I and II are true
Both I and II are false
In coconut, the liquid endosperm is formed because
Karyokinesis is not followed by cytokinesis
Karyokinesis is followed by cytokinesis
Formation of the liquid endosperm is not dependent upon karyokinesis and cytokinesis
None of the above
Keeping is viewed the structure of cell membrane, which one of the following statements is correct with respect to the movements of liquid and proteins from one liquid monolayer to the other (flip-flop movement).
While proteins can flip flop, liquids can not
Neither lipids, nor proteins can flip flop
Both lipids and proteins can flip flop
While lipids can rarely flip-flop, proteins can not
D.
While lipids can rarely flip-flop, proteins can not
The flip-flop movement refers to the transfer of lipid molecules from one side of the bilayer to the other, Enzymes are concerned with the enzymatic activity of the membrane.
Ribosomes are particles about 200 Å units in diameter consisting of protein and RNA. The percentage of protein and RNA is respectively
80% and 20%
60% and 40%
50% and 50%
40% and 60%
Match the biological molecule listed under column I with their biological function listed under column II. Choose the answer which gives correct combination of alphabet of the two columns.
Column I (Biological Molecule) | Column II (Function) |
A. Glycogen | 1. Hormone |
B. Globulin | 2. Biocatalyst |
C. Steroid | 3. Antibody |
D. Thrombin | 4. Storage Product |
A-3, B-2, C-4, D-1
A-4, B-2, C-1, D-3
A-2, B-4, C-3, D-1
A-4, B-3, C-1, D-2