(b) Both statements A and B are correct but statement B is
not the correct explanation of statement A.
(c) Statement A is correct but statement B is incorrect.
(d) Both statements A and B are incorrect.
- Refer the given table and select the option that correctly fill
the blanks in it.
Property Simple
diffusion
Facilitated
transport
Active
transport
(i) Highly selective No A Ye s
(ii) B No Yes Yes
(iii) Uphill transport No No C
(iv) D No No Yes
(a) A-No, B-Requires ATP energy,
C-No, D-Transport saturates
(b) A-Yes, B-Transport saturates,
C-Yes, D-Requires ATP energy
(c) A-No, B-Transport saturates,
C-Yes, D-Requires ATP energy
(d) A-Yes, B-Transport saturates,
C-No, D-Requires ATP energy
- Consider the following statements regarding mineral
nutrients and choose the correct one.
(a) Mineral ion concentration in tissue which reduces dry
weight of tissues by 20% is called toxic concentration.
(b) Hunger signs appear when the availability of the
essential nutrients rise above the critical concentration.
(c) Magnesium takes part in formation of chlorophyll and
carotenoids.
(d) Both (b) and (c).
- Select the incorrect statement regarding facilitated
diffusion.
(a) In facilitated diffusion special proteins move substances
across membrane with expenditure of ATP energy.
(b) Substances with hydrophilic moiety are difficult to pass
through membrane.
(c) Facilitated diffusion allows cell to select substances for
uptake.
(d) It is a physical process that is dependent upon the
specific proteins.
- Carefully study the following statements.
(i) Occurrence of chloroplasts at the outer margins of
mesophyll cells helps in diffusion of CO 2 required for
photosynthesis from the atmosphere to the inside of
chloroplasts.
(ii) Chlorophyll a occurs in different forms due to formation
of complexes with proteins.
(iii) The different forms of chlorophyll have maximum
absorption at different wavelengths of visible light.
(iv) Calvin cycle is the basic pathway that occurs in both C 4
plants and CAM plants.
(v) Photorespiration does not produce energy or reducing
power.
Which of the above statements is/are correct?
(a) (i), (iii), (iv) and (v) (b) (ii), (iii) and (iv)
(c) (i), (ii), (iii) and (iv) (d) (i), (ii), (iii), (iv) and (v)
- Read the following statements and select the correct pair of
statements.
I. Plant movements like folding and drooping of leaves in
Mimosa is due to diffusion.
II. Diffusion helps in spreading of ions throughout the
protoplast.
III. Osmosis plays a key role in the growth of radicle during
seed germination.
IV. Diffusion operates only in a liquid medium.
(a) I and IV are correct
(b) III and IV are correct
(c) II and III are correct
(d) I, II, IV are correct.
- Refer to the given figure and select the incorrect option
related to the process shown in the figure.
(a) Regular aeration is required for proper growth of
roots.
(b) This experiment is useful in knowing deficiency
symptom.
(c) This experiment cannot determine the essentiality of
mineral nutrients.
(d) Bottles are covered with black paper to prevent growth
of algae.
- The chemical potential of pure water at normal temperature
and pressure is
(a) –1 (b) –0.5 (c) 1 (d) 0.
- With the reference to six Calvin cycles, select the correct
option for the each given statement.
I. Number of phosphoglyceraldehyde molecules are
produced.
II. Number of ATP molecules required for the synthesis of
phosphoglyceraldehyde.
III. Number of NADPH molecules required for the synthesis
of phosphoglyceraldehyde molecule.
