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⁺…
4 years ago
UP1996
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…
4 years ago
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…
4 years ago
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…
4 years ago
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…
4 years ago
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…
6 years ago
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)…
6 years ago
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…
6 years ago
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…
6 years ago
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…
6 years ago