List of top Botany Questions

Choose the correct statements among the following
I. No energy is used directly by the plant to translocate water.
II. The mechanism of water transport from the soil through the plant body to the atmosphere includes diffusion, bulk flow, and osmosis.
III. Water moves in the root via apoplast, transmembrane and symplast pathway.
IV. The cohesion tension theory explains water transport in xylem.

Assertion (A): Trichomes help in preventing water loss due to transpiration.
Reason (R): The specialized cells near the guard cells together constitute stomatal apparatus.

Identify the plants with the following characters in a sequence:

A) Annual plants found in dry weather
B) Submerged in water without rooted in mud
C) No contact with soil, present on surface of water
D) Perennial plants to withstand prolonged drought conditions

The correct sequence of essential elements K, Mg, Mo, P, C of the given list, which show following activities.
A) ATP synthesis
B) Component of enzymes
C) Enzyme activation
D) Turgidity maintenance

Match the following:

Assertion (A): In plant vacuole, the concentration is higher than the cytoplasm.
Reason (R): Tonoplast facilitates the transport of ions and other materials against concentration gradient.
Identify the correct option from the following
Options:

Identify the wrongly matched one:

Choose the incorrect statements among the following I. Hairy leaves in plants are associated with resistance to insect pest.
II. Solid stem of wheat rejects stem saw fly.
III. Smooth leaves and nector less cotton attracts bollworms.
IV. Resistance to maize stem borer is by low aspartic acid and high nitrogen and sugar.

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:

No. of ATP, protons and electrons required for the formation of 6NH$_3$ molecules in biological nitrogen fixation.

Choose the correct statements among the following
A) Cellulose does not contain complex helices.
B) In DNA one full turn of helical will have 3.6\AA\ rise for each base pair.
C) Aibrin is a toxin secondary metabolite.
D) By grinding tissues in perchloric acid, acid soluble fraction can be obtained.

Assertion (A): Non-polar tails of saturated hydrocarbons are protected from aqueous environment.
Reason (R): Hydrophilic heads are on the outside of the membrane.
Identify the correct option from the following:

Enzymes that remove nucleotides from ends and make specific cuts:

Assertion (A): Molecular interactions result in emergent properties at a higher level of organization.
Reason (R): All living phenomena are due to underlying interactions.
Identify the correct option from the following: