Gaseous exchange through the skin is known as ______________ respiration?
(A) Cuticular
(B) Cutaneous
(C) Skin
(D) Pulmonary
All of the following contain cartilage except:___________?
(A) Larynx
(B) Trachea
(C) Bronchi
(D) Bronchioles
Voice box is another name used for___________?
(A) Buccal cavity
(B) Pharynx
(C) Larynx
(D) Chest Cavity
The blood enters the ________________ side of heart ?
(A) Posterior
(B) Anterior
(C) Lateral
(D) All possible
An increrase in plant girth due to activity of _____________ is called secondary growth?
(A) Cork cambium
(B) Pith.
(C) Vascular cambium.
(D) Both a and c
Which of the following statement about osteoporosis is incorrect.
(A) It results from estrogen deficiency.
(B) Bone eating process takes over bone formation process.
(C) There is reduction of bone mass and change in chemical composition of the matrix
(D) It is common in old ag
Among the followings which is the most longest supportive cell?
(A) Tracheids
(B) Sclereids
(C) Trachea
(D) Collenchyma cells
Which of the follwing is a childhood disease resulting from nutritive Ca2+ deficiency?
(A) Hypocalcaemia Tatanic spasms.
(B) Osteomalacis.
(C) Rickets.
(D) Tetany
Secondary cell wall of sclerenchyma cells is impregnated with_________________?
(A) Cellulose.
(B) Peptidoglycan and murein.
(C) Lignin.
(D) Pectin.
Which of the following hormone is predominantly responsible for bone weakening in older women?
(A) Progesterone.
(B) Oestrogen.
(C) Parathyroid hormone.
(D) Calcitonin.