1.Recombinant DNA is introduced in to host cell by means of
A.phage
B.vector
C.bacteria
D.enzyme
2.In cystic fibrosis, the patient lacks a gene that codes for trans-membarene carrier of
A.sodium ion
B.carbon dioxide
C.chloride ion
D.potassium ion
3.Which gene is located on linkage group number 11 in man
A.sickle cell anemia
B.leukemia
C.albinism
D.all of these
4.In birds the sex is determined by the type of
A.sperm
B.autosomes
C.egg
D.none of these
5.In RNA nucleotides are attached by
A.peptide bonds
B.hydrogen bonds
C.covalent bond
D.phosphodiester bond
6.The chromosome is
A.gene
B.genes + protein
C.DNA + genes
D.gene + protein
7.The human body contains water
A.60-80%
B.70-90%
C.75-95%
D.80-90%
8.Environment is a source of
A.food
B.shelter
C.clothing
D.all of these
9.Fresh water ecosystem covers
A.2%
B.1%
C.3%
D.5%
10.Foul smell in lake is produced by
A.algae
B.bacteria
C.fungi
D.all
11.Starch is richly present in
A.onion
B.apple
C.cereals
D.tomato
12.Plants having foreign DNA are known as
A.genetic plants
B.recombinant plants
C.cultured plants
D.transgenic plants
13.Which of the following kinds of atom do not occur in carbohydrates
A.carbon
B.hydrogen
C.nitrogen
D.oxygen
14.The basic framework of all types of membranes are
A.lipoproteins
B.glycoproteins
C.proteoglycans
D.nucleoproteins
15.Single membrane bounded organelle is
A.nucleus
B.lysosome
C.ribosome
D.none of these
16.Irregular grape like cluster of bacilli is called
A.diplo bacilli
B.strepto bacilli
C.staphylo bacilli
D.none of these
17.It is generally accepted that plants arose from ancestral
A.green algae
B.fungi
C.bacteria
D.all of these
18.Main energy reserves in the case of green algae are
A.glycogen
B.sucrose
C.glucose
D.starch
19.The chief component of the cell wall of the majority of fungi is
A.pectin
B.chitin
C.lignin
D.cellulose
20.After pollination the pollens are transferred to which part of the flower
A.ovary
B.style
C.stigma
D.none of these
21.Glyoxisomes contain enzymes for
A.glyoxylate cycle
B.glycolate cycle
C.Calvin cycle
D.none of these
22.Vacuoles serve to
A.expand the plant cells
B.sites for storage
C.both in expansion and storage
D.non-specific function
23.An isolated virus is not considered living since it
A.separate into two parts
B.cannot metabolize
C.rapidly looses its genome
D.all of these
24.The predominant phycobilin pigment in cyanobacteria which is of blue colour is
A.phycoerythrin
B.phycocyanin
C.fucocyanin
D.fucoxanthin
25.Deafness is caused by misuse of
A.penicillin
B.tetracycline
C.paracetamol
D.streptomycin
26.Cell envelope does not include
A.capsule
B.slime layer
C.cell wall
D.cell membrane
27.Coenocytes is a fungal body which is
A.multi-nucleate aseptate
B.multi-nucleate septate
C.uni-nucleate septate
D.uni-nucleate aseptate
28.Bryophytes are
A.all heterosporous
B.all homosporous
C.mostly homosporus
D.none of these
29.Nephridia are excretory organs in
A.round worms
B.lizard
C.earth worm
D.planaria
30.Which one is harmful mollusc
A.slug
B.snail
C.oyester
D.star fish
Answers
| 1.B | 2.C | 3.D | 4.C | 5.D | 6.B |
| 7.B | 8.D | 9.B | 10.D | 11.C | 12.D |
| 13.C | 14.A | 15.B | 16.C | 17.A | 18.D |
| 19.B | 20.C | 21.A | 22.C | 23.B | 24.B |
| 25.D | 26.D | 27.A | 28.B | 29.C | 30.A |