A. Positive phototropism and negative geotropism
B. Negative phototropism and positive geotropism
C. Negative tactic movement and positive tropic movement
D. Positive geotropism of stem and roots
Roots of a plant show Read More »
A. Turgor movement
B. Nastic movement
C. Tropic movements.
D. Growth movement
Rapid movement of leaves of mimosa on touching is an example of Read More »
A. A smooth muscle cell.
B. A cardiac muscle cell.
C. A skeletal muscle cell.
D. All of these
Which of the following is a uninucleated cell? Read More »
A. Pith.
B. Pit.
C. Petiole
D. Ecdysone
The place of attachment of leaf with the shoot is called Read More »
A. 2-3 weeks
B. 3-4 weeks.
C. 2-3 months
D. 3-4 months.
Bony callus formation completes in Read More »
A. Fibroblast and osteoblast.
B. Osteoblast and osteoclast.
C. Osteoclast and osteocyte
D. Onteocyte and osteoblast
Which of the following cells are involved in soft callus formation? Read More »
A. Healing properties.
B. Destructive properties.
C. Neutralizing properties.
D. Dead cells
A fracture hematoma has Read More »
A. Primary Xylem and secondary xylem.
B. Primary xylem and secondary phloem.
C. Primary xylem and primary phloem
D. Secondary xylem and secondary phloem.
Vascular Cambium initially appears as actively dividing cells between Read More »
A. They are more common than in adult age.
B. Occur as a result of bone being thin and weak.
C. Due to good blood supply it results in quick healing.
D. It involves osteoblasts and osteocytes.
Which of the following statements about fractures in old age is incorrect? Read More »
A. Cork cambium
B. Pith.
C. Vascular cambium.
D. Both a and c
An increrase in plant girth due to activity of ________ is called secondary growth? Read More »
