Spectrum biology

(Axel Boer) #1

29.Germinal epithelium of ovary has
(a) cuboidal cells (b) columnar cells
(c) squamous cells (d) stratified cells


30.A fall in Glomerular Filtrate Rate (GFR) activates
(a) adrenal medulla to release adrenaline
(b) posterior pituitary to release vasopressin
(c) adrenal cortex to release aldosterone
(d) juxtaglomerular cells to release renin


31.Consider the following statements and choose the
correct code.
I.Allium sativum and Allium cepa belongs to the
family – Solanaceae.
II. Tomato belongs to Liliaceae family.
III. Colchicum autumnale belongs to Liliaceae family.
IV. Pneumatophores are seen in Rhizophora.
Codes
(a) I, II and III (b) III and IV
(c) I, III and IV (d) I, II, III and IV


32.Select the correct option describing gonadotropin
activity in a normal pregnant female.
(a)High level of FSH and LH stimulates the thickening of
endometrium
(b)High level of FSH and LH facilitate implantation of the
embryo
(c)High level of hCG stimulates the synthesis of oestrogen and
progesterone
(d)High level of hCG stimulates the thickening of endometrium


33.Name the type of aestivation when sepal or petals in a
whorl just touch one another at the margin without
overlapping
(a) twisted aestivation (b) imbricate aestivation
(c) valvate aestivation (d) vexillary aestivation


34.Antigen binding site in an antibody is found between
(a)two light chains
(b)two heavy chains
(c)one heavy and one light chain
(d)either between two light chains or between one heavy and
one light chain depending upon the nature of antigen


35.Stages in menstrual cycle are
(a)recovery phase and proliferative phase
(b)proliferative phase and secretory phase
(c)proliferative, secretory and menstrual phase
(d)recovery phase, secretory phase and phase of menstrual flow


36.Some hormones are given in column I. Match the
source and function with column II and choose the
correct code.


Column I Column II
A. Oxytocin 1. Pineal gland, regulate the circadian
behaviour
B. Progesterone 2. Posterior pituitary, facilitates birth
C. Thymus 3. neck region, proliferation and
regulation of T-lymphocyte
D. Melatonin 4. Gonads, maintains pregnancy and
uterus wall thickening

Codes
A B C D A B C D
(a) 2 4 3 1 (b) 3 2 4 1
(c) 4 2 1 3 (d) 1 2 3 4
37.‘Hing’ of commerce is obtained from
(a) diatoms (b) waste petroleum product
(c) resinous exudate from root(d) it is not a plant production
38.An organism used as a biofertilizer for raising Cajanus
cajan crop.
(a) Nostoc (b) Azospirillum
(c) Rhizobium (d) Azotobacter
39.In gynandromorph,
(a)Some cells of body contain XXY and some cells with
genotype XO
(b)Some cells of body contain XX and some cells with
genotype XY
(c)All cells with genotype XXY
(d)All cells with genotype XX
40.Which of the following is not under the control of
dictyosomes?
I.Depositon of cell wall material
II. Cell plate formation
III. Extracellular secretion
IV. Autophagy
(a) I, II and IV (b) II, III and IV (c) IV only (d) I and III
41.Which of the following is responsible for peat
formation?
(a) Marchantia(b) Sphagnum(c) Funaria (d) Riccia
42.Apomixis is a special mechanism to produce seeds
without fertilisation. Choose the correct statement
regarding apomixis.
I.It is a form of asexual reproduction which does not
involve syngamy and meiosis.
II. Adventive embryony is a type of apomixis when one
or more embryos are formed.
III. Embryo develops from the separate embryo sacs
present in the same ovule.
(a) Only I (b) II and III (c) Only II (d) I and II
43.Synthesis of one molecule of glucose requires
(a) 6 CO 2 , 18 ATP and 12 NADPH
(b) 6 CO 2 , 12 ATP and 18 NADPH
(c) 6 CO 2 ; 30 ATP and 12 NADPH
(d) 6 CO 2 , 38 ATP and 12 NADPH
44.Match the following and choose the correct code.
List I List II
A. One gene-one polypeptide 1. Crick
B. Genetic code was discovered
by


  1. Temin and Baltimore


C. Reverse transcription 3. Beadle and Tatum
D. Semiconservative DNA
replication


  1. Meselson and Stahl


Codes
A B C D A B C D
(a) 2 3 1 4 (b) 3 1 4 2
(c) 1 3 2 4 (d) 3 1 2 4
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