Higher turgor pressure in a plant cell is maintained by________________?
(A) Large number of vacoules in a plant cell.
(B) Higher ionic concentration inside vacuoles resulting from active pumping of ions at their tonoplastic membrane
(C) Higher osmotic pressure of the cell vacuole
(D) both b and c
Fibrous capsule surrounding synovial joints may be thickened at some places to form:
(A) Synovial membrane.
(B) Ligaments.
(C) Muscles.
(D) Tendon
Joint between two parietal bones, which is infact immovable one is an example of_________?
(A) Fibrous joints.
(B) Cartilaginous joints.
(C) Synovial joints.
(D) None of these
Rapid movement of leaves of mimosa on touching is an example of _____________?
(A) Turgor movement
(B) Nastic movement
(C) Tropic movements.
(D) Growth movement
Which of the following is a uni-nucleated cell?
(A) A smooth muscle cell.
(B) A cardiac muscle cell.
(C) A skeletal muscle cell.
(D) All of these
The place of attachment of leaf with the shoot is called__________?
(A) Pith.
(B) Pit.
(C) Pulvinus
(D) Ecdysone
Bony callus formation completes in___________?
(A) 2-3 weeks
(B) 3-4 weeks.
(C) 2-3 months.
(D) 3-4 months.
Which of the following cells are involved in soft callus formation?
(A) Fibroblast and osteoblast.
(B) Osteoblast and osteoclast.
(C) Osteoclast and osteocyte
(D) Onteocyte and osteoblast
Sperms of liverworts, mosses, ferns move towards archegonia, in response to uncleic acid released by the ovum. This is an example of ____________?
(A) Chemotropic movement
(B) Chemotactic movement
(C) Chemosastic movement
(D) Haptonastic movement
A fracture hematoma has____________?
(A) Healing properties.
(B) Destructive properties.
(C) Neutralizing properties.
(D) Dead cells