List of practice Questions

Choose the correct statement among the following
I. Validity of GM research and safety of introducing GMO has to be given by GEAC.
II. Molecular farming means utilization of plants as biofactories for obtaining commercially useful products.
III. Basmati Rice variety is a transgenic plant with improved nutritional value.
IV. “Flavr savr” is suitable for food storage technology.

Choose the correct statement from the following
(I) In Hatch-Slack pathway mesophyll cells lack RuBisCO enzyme
(II) PEP carboxylase is present in bundle sheath of chloroplast
(III) OAA is formed in mesophyll cells
(IV) PEP is primary CO2 acceptor present in chloroplast of bundle sheath cells

Arrange the intermediate compounds of Kreb's cycle based on number of carbons in ascending order.

Match the following

List - I	List - II
A) Kinetin	IV) Adenine derivatives
B) ABA (Abscisic Acid)	I) Terpenes
C) GA3 (Gibberellic Acid)	I) Terpenes
D) IAA (Indole Acetic Acid)	III) Indole compound

Choose the correct series of bacteria that cause Tetanus, Diphtheria, Crown gall and Blight, respectively

Number of nucleotides in viroid

The phenomenon of a single gene product may produce more than one effect so that a single gene may be related to more than one character.

Mutation is a phenomenon of
1. Alteration of genes
2. Variation in DNA
3. Heritable change in genotype and phenotype of an organism

Choose the correct statements among the following:
I) CO\textsubscript{2} fixed by the forest will have direct economical value.
II) By reducing the use of pesticides we can protect the pollinators.
III) Ecosystem services are delivered by non-living organisms of ecosystem.
IV) Pollinators play a significant role in the enhancement of food production.
Identify the correct option from the following:

Choose the correct combination regarding mechanism of translocation:

Attraction of water molecules to polar surfaces in tracheary elements:

Match the following:

List - I	List - II
A. Nucleic acids structure	IV. Phosphorous
B. Synthesis of nucleic acid	III. Iron
C. Stabilize protein structure	II. Sulphur
D. Catalase	II. Sulphur

Bacteria that oxidise Ammonia to Nitrite

Choose incorrect statement from the following

Assertion (A): Decrease in the proton number in stroma and accumulation of more protons in the lumen creates proton gradient across the membrane.
Reason (R): Energy is released by the breakdown of proton gradient by ATPase and helps in synthesis of ATP.
Identify the correct option from the following:

Choose the correct statements among the following:
1. Plant ash includes all carbon and inorganic elements.
2. In amino acid, an amino group and acidic group on α-carbon makes it α-amino acid.
3. Glycerol has 3 -OH groups.
4. Acid insoluble fractions are called macromolecules.
Identify the correct option from the following:

Choose the correct statements among the following:
1. Duplication of genome, synthesis of other cell constituents, and division to produce new cells is called cell cycle.
2. Interphase is followed by a resting phase.
3. In every cell division, genetic variability will increase from generation to generation.
4. Plant cells can divide mitotically in both haploid and diploid cells.
Identify the correct option from the following:

Assertion (A): The functions of sieve tubes are controlled by the nucleus of companion cells. The companion cells help in maintaining the pressure gradient in sieve tubes.
Reason (R): Gymnosperms phloem has albuminous cells and sieve cells.
Identify the correct option from the following:

Assertion (A): Dicot leaf is dark green in colour on the upper surface and light green in colour on the lower surface.
Reason (R): Palisade tissue is at the abaxial side and spongy tissue is at the adaxial side in this leaf.
Identify the correct option from the following:

Assertion (A): Due to water stress the bulliform cells in grasses make the leaf curl outward to minimise water loss.
Reason (R): Bulliform cells are large, empty and colourless cells.
Identify the correct option from the following:

Establishment of Natural Committee for Environmental Planning and Coordination was established by the efforts of:

Match the following:

List - I	List - II
A. Velamen Roots	II. Eichhornia
B. Axillary buds as tendrils	I. Watermelon
C. Floral buds as storage food	IV. Agave
D. Swollen petiole	III. Pisum

Identify the correct option from the following:

The margins of sepals or petals are overlap one another but not in particular direction.

Assertion (A): Presence of {Eichhornia} in a pond can lead to the death of fishes.
Reason (R): It is an invasive weed and occupies the total pond.
Identify the correct option from the following:

In flowering plants, a mature female gametophyte is derived from the megaspore mother cell by: