Q.41. Ctenophores exhibit affinities with (2010)
(a) Rotifera (b) Cnidaria
(c) Bryozoa (d) Chaetognatha
Ans. (b) Cnidaria
Q.42. What is the function of nervous tissue?
(a) Responsiveness (b) Stimulation
(c) Contraction (d) Explosion. (2009)
Ans. (b) Stimulation.
Q.43. Glycolysis takes place in -
(a) Nucleus (b) Lysosome
(c) Mitochondria (d) Cytoplasm. (2009)
Ans. (d) Cytoplasm.
Q.44. Write true or false.
(a) Ctenophora are commonly known as Sea Walnuts.
(b) Oestrogen is male hormone.
Ans. (a) (True) (b) True
Q.45. Write true or false.
(a) Aurelia belongs to class Hydrozoa.
(b) Axoplasm is seen in the muscle.
(c) Entamoeba gingvalis may cause pyorrhea.
(d) Ctenophora are commonly known as Sea Walnuts.
(e) Oestrogen is male hormone. (2014)
Ans. (a) False (b) False (c) True (d) True (e) True
Q.46. Write true or false. (2015)
(a) Pyrrhoea is caused by Entamoeba histolytica.
(b) In sponges archaeocytes are helpful in digestion.
(c) Jelly fish is a fish.
(d) The feeding stage of Monocystis is known as Trophozoit.
(e) Vasopressin hormone is secreted by anterior Pituitary.
(f) Life saving hormones are secreted by Pineal.
(g) Salivary amylase digests starch in mouth.
(h) Mitral valve is bicuspid.
(i) Ctenophora exhibits affinities with rotifera.
Ans. (a) False (b) True (c) False (d) True
(e) False (f) False (g) True (h) True
(i) False
Q.47. Write true or false. (2016)
(a) In mammals, the ornithine cycle operatesin the kidneys.
(b) Secretin is a hormone.
(c) Glossina palpalis transmits the infective stage of Leishmania.
(d) Ephyra stage in the life cycle of Aurelia occurs after Planula.
(e) The production of erythrocytes is stimulated by erythropoletin.
(f) Development of secondary sexual characters in female is controlled by progesterone.
(g) Amphiblastula is a larval stage of Monocystis.
(h) Spicules are secreted by porocytes.
(i) Uric acid is the end product of Glycoprotein metabolism.
Ans. (a) True (b) True (c) False (d) True
(e) True (f) False (g) False (h) False (i) False.
Q.48. Fill in the blank. (2018)
(i) Parathyroid hormone regulates ............. level of blood.
(ii) Glycolysis takes place in ...........
(iii) Melatonin hormone is secreted by ........... gland.
(iv) Vasopressin hormone is secreted by .............. part of pituitary gland.
(v) Oxyntic or Parietal cells are located in the ............
(vi) Thyroid stimulating hormone is secreted by ..............
Ans. (i) Serum calcium
(ii) Cytoplasm.
(iii) Pineal
(iv) Posterior
(v) Stomach
(vi) anterior pituitary gland.
Q.49. Write true or false. (2017)
(a) The casusative agent of a disease kalaazar is leishmania.
(b) Pinacoderm and choanoderm are found in Monocystis.
(c) Monocysits is found as endoparasite in the seminal vesicles of earthworm.
(d) Sycon is commonly known as “jelly fish”.
(e) The hormone clacitonin is secreted by pancreas.
(f) The hormone vasopressin is secreted by the posterior pituitary gland.
(g) Phagocytosis of dead tissues is performed by white blood corpuscles.
(h) The hormone testosterone is secreted by the leydig cells of testis.
(i) The enzyme pepsin is secreted in the pancreatic juice.
Ans. (a) True
(b) False
(c) True
(d) False
(e) False
(f) True
(g) True
(h) True
(i) True
Q.50. Fill in the blanks - (2019)
(i) Osmoregulation in Euglena is done by ___________.
(ii) The disease kala azar is caused by ______________.
(iii) The reproductive zooid of obelia is _____________.
(iv) In stomach, the HCl is secreted by ______________.
(v) The hormone ADH is secreted by ______________.
(vi) Sertoli cells are found in _____________________.
(vii) Growth hormone is secreted by ________________.
Ans. (i) Contractile vacuole.
(ii) Leishmania
(iii) Blastostyles.
(iv) Parietal cells
(v) Posterior pituitary gland.
(vi) The seminiferous tubules of testes.
(vii) Anterior pituitary gland.