(a) Cholesterol – A component of animal cell membrane
(b) Lecithin – A component of cell membrane
(c) Triglyceride – An energy source
(d) Adenosine – A component of nucleic acids
- Which is the best way to separate intact chloroplast from green
leaves of angiospermic plant?
(a) Petrol-ether (b) Chloroform
(c) 10% sucrose solution (d) Alcohol
- Phragmoplast is related to
(a) division of nucleolus (b) cell elongation
(c) cytokinesis
(d) assemblage of chromosomes at metaphase.
- Flowering plants have developed certain outbreeding devices to
discourage self-pollination and to encourage cross-pollination.
One of these is not an example of such outbreeding device.
(a) Dicliny (b) Dichogamy
(c) Herkogamy (d) Cleistogamy
- The early stage human embryo distinctly possesses
(a) gills (b) gill slits
(c) external ear (pinna) (d) eyebrows.
- Read the following statements carefully and select the correct
statement(s).
(i) hPL plays a major role in parturition.
(ii) Foetus shows movements first time in the 7th month of
pregnancy.
(iii) Signal for parturition comes from fully developed foetus and
placenta.
(iv) Embryo’s heart is formed after the 2nd month of pregnancy.
(a) (ii) and (iii) (b) (iii) only
(c) (ii) and (iv) (d) (i) and (iv)
- Which of the following equations correctly represents Verhulst-
Pearl logistic growth?
(a)
(b)
(c) (d)
- Identify A, B, C and D in the given diagram of mRNA.
A C D
B
5 3
A B C D
(a) Methylated Initiation Termination Poly A tail
cap codon codon
(b) Poly A tail Termination Initiation Methylated
codon codon cap
(c) Methylated Non-coding Coding Poly A tail
cap region region
(d) Methylated Coding Non-coding Poly A tail
cap region region
- The rate of formation of new organic matter by rabbit in a
grassland, is called
(a) net productivity (b) secondary productivity
(c) net primary productivity (d) gross primary productivity.
65. Study the pedigree chart of a family showing the inheritance of
sickle-cell anaemia.
The trait traced in the above pedigree chart is
(a) dominant X-linked (b) recessive X-linked
(c) autosomal dominant (d) autosomal recessive.
- Scientific names are derived from Latin language or are latinised.
This is because
(a) Latin is a dead language
(b) Latin is more popular than other languages
(c) Latin is the oldest language
(d) all of these.
- Halobacterium is
(a) aerobic chemoautotroph (b) aerobic photoautotroph
(c) anaerobic chemoautotroph
(d) heterotroph.
- Cysteine and methionine contain one common element that is
(a) magnesium (b) sulphur
(c) nitrogen (d) potassium.
- Which one is incorrect among the followings?
(a) Metaxylem is the later formed xylem.
(b) Protoxylem elements are capable of being stretched.
(c) Metaphloem is made up of smaller and narrower elements.
(d) Protophloem is short lived and gets crushed.
- Insects with incomplete metamorphosis are
(a) hemimetabolous (b) ametabolous
(c) paurometabolous (d) holometabolous.
- Triglycerides are fatty acid esters of glycerol, which are formed by
the esterification of molecule(s) of fatty acids with
molecule(s) of glycerol.
(a) one, two (b) one, three
(c) three, one (d) two, one
- The biochemical objective of PS I is to
(a) oxidise NADPH (b) hydrolyse ATP
(c) phosphorylate ADP (d) reduce NADP+.
- When two molecules of acetyl-CoA enter the TCA cycle, net gain
at the end of the cycle is
(a) 2NADH 2 + 2FADH 2 + 1GTP
(b) 3NADH 2 + 2FADH 2 + 2GTP
(c) 6NADH 2 + 2FADH 2 + 2GTP
(d) 3NADH 2 + 1FADH 2 + 4GTP.
- Which of the following statements is incorrect?
(a) Mucosal epithelium has goblet cells which secrete mucus for
lubrication.
(b) Mucosa forms gastric glands in the stomach and crypts in
between the bases of villi in intestine.
(c) Cells lining the villi has brush border or microvilli.
(d) All the four basic layers in the wall of gut never show
modifications in different parts of the alimentary canal.
