UP1996

Which one of the following sets of ions is necessary in the chemical events

Which one of the following sets of ions is necessary in the chemical events for muscle contraction? Options (a) Na⁺…

The outer layer of vacuole is called

The outer layer of vacuole is called Options (a) cell wall (b) plasmolayer (c) tonoplast (d) leucoplast Correct Answer: tonoplastExplanation:No…

Passage of materials to and from the cells is carried out by and active transport

Passage of materials to and from the cells is carried out by…… and active transport. Fill in the blanks with…

Movement of touch is called

Movement of touch is called Options (a) lithotropism (b) thigmotropism (c) phototropism (d) thermotropism Correct Answer: thigmotropismExplanation:Thigmotropism is a directional…

In plants water supply is due to

In plants, water supply is due to Options (a) osmosis (b) imbibition (c) guttation (d) adhesion force Correct Answer: osmosis…

If the cell of root in wheat plant have 42 chromosomes then the number

If the cell of root in wheat plant have 42 chromosomes then the number of chromosome in the cells of…

When pollen tube enters into the ovule by integument, it is called

When pollen tube enters into the ovule by integument, it is called Options (a) dicliny (b) herkogamy (c) chalazogamy (d)…

Which is the part of female reproductive system?

Which is the part of female reproductive system? Options (a) anther (b) embryo sac (c) stamen (d) all of these…

Which one of the following is male gametes?

Which one of the following is male gametes? Options (a) megasporangium (b) embryo sac (c) microspore (d) antipodal cell Correct…

When acetone reacts with bleaching powder, the compound formed is

When acetone reacts with bleaching powder, the compound formed is Options (a) CCl₄ (b) CHCl₃ (c) CH₃CHO (d) CH₃COOH Correct…