MTMTBIOLOGY TODAYBIOLOGY TODAY || MARCH ‘16MARCH ‘16 6565- Find the wrongly matched pair.
(a) Endemism - Species confined to one
region and not found
anywhere else
(b) Hotspots - Regions with species
richness
(c) Alien species to India - Clarias gariepinus
(d) In situ conservation - IVF - Select the option which correctly matches the endocrine
gland with its hormone and its function.
Endocrine Hormone Function
(a) Placenta Estrogen Initiates secretion of the
milk
(b) Corpus Estrogen Essential for mainten-
luteum mance of endometrium
(c) Leydig’s cells Androgen Initiates the production
of sperms
(d) Ovary FSH Stimulates follicular
development and the
secretion of estrogens - Some of the steps of DNA fingerprinting are given below.
Identify the correct sequence from the options given.
A. Electrophoresis of DNA fragments
B. Hybridisation with DNA probe
C. Digestion of DNA by RENs
D. Autoradiography
E. Blotting of DNA fragments to nitrocellulose membrane
(a) C – A – B – E – D (b) C – A – E – B – D
(c) A – E – C – B – D (d) A – C – E – D – B - Which of the following is not vestigial organ in human
beings?
(a) Rudimentary ear muscles and third molars
(b) Coccygeal (tail) vertebrae and scalp muscles
(c) Vermiform appendix and nictitating membrane of the
eye
(d) Ear pinna, patella, olecranon process - Organ Phylum Function
Parapodia Annelida? A
? B Ctenophora Locomotion
? C Mollusca Rasping organ
Malpighian tubules Arthropoda? D
Cnidoblasts Coelenterata? E
From the above table find out the missing organ or
function- A, B, C, D and E respectively
(a) A-swimming, B-comb plates, C-radula, D-excretion,
E-defense
(b) A-defense, B-radula, C-comb plates, D-excretion,
E-swimming
(c) A-defense, B-radula, C-comb plates, D-swimming,
E-excretion
(d) A-protection, B-parapodia, C-visceral mass,
D-locomotion, E-excretion- Each 100 mL of human arterial blood carries ‘P’ mL of O 2
and ‘Q’ mL of CO 2 whereas each 100 mL of venous blood
carries ‘R’ mL of O 2 and ‘S’ mL of CO 2. Choose the correct
value of P, Q, R and S.
(a) P - 48 mL, Q - 19-20 mL, R - 52 mL, S - 14-15 mL
(b) P - 19-20 mL, Q - 48 mL, R - 14-15 mL, S - 52 mL
(c) P - 14-15 mL, Q - 52 mL, R - 19-20 mL, S - 48 mL
(d) P - 52 mL, Q - 14-15 mL, R - 48 mL, S - 19-20 mL - In the following human pedigree, the filled symbols
represent the affected individuals. Identify the type of
given pedigree.
(i)
(ii)(iii)(iv)
(a) Autosomal recessive (b) X-linked dominant
(c) Autosomal dominant (d) X-linked recessive- Match the items in Column I with those in Column II, and
choose the correct answer.
Column I Column II
P. Mitosis (i) Occurs in diploid cells
only
Q. Meiosis (ii) Occurs in both haploid
and diploid cells
(iii) Daughter and parent cells
have same chromosome
numbers
(iv) Synapsis of homologous
chromosomes
(a) P-(i), Q-(ii) (b) P-(ii), Q-(iii)
(c) P-(iii), Q-(iv) (d) P-(iv), Q-(i) - Which of the following statements about plasmolysis is/are
true?
I. Plasmolysis occurs when water moves into the cell.
II. Cells shrink in hypotonic solutions.
III. If the external solution balances the osmotic pressure
of the cytoplasm, it is said to be isotonic.
(a) I only (b) II only
(c) III only (d) I and II only