BOTANY PG TRB PREPARATION ONLINE TEST - 8

Botany PGTRB Online Test

1. The branch of botany which involves isolation and fusion of protoplast is
A) Agriculture
B) Horticulture
C) Tissue culture
D) Aquaculture
2. Institute of Forest Genetics and Tree Breeding is located at
A) Bangalore
B) Hyderabad
C) Dehradun
D) Coimbatore
3. The organisms that help the mineral cycling are
A) Secondary consumers
B) Producers
C) Primary consumers
D) Decomposers
4. Famous palaeobotanist of India is
A) P.Maheswari
B) S.R.Kashyap
C) B.Sahni
D) B.P.Pal
5. Progeny developed from a single plant by vegetative propagation is
A) Inbred line
B) Pure line
C) Clone
D) Mass selection
6. A group of plants (progeny) obtained from a single homozygous plant by self pollination is called
A) Mass selection
B) Pure line
C) Clone
D) Intergeneric cross
7. The crop improved by interspecific hybridization is
A) Tomato (Pusa red plum)
B) Wheat (Triticale)
C) Cabbage
D) Potato(Nilgiris)
8. Mitochondria are best stained with
A) Janus green
B) Methylene blue
C) Safronin
D) Eosin
9. The enzyme acid phosphatase occurs in
A) Chloroplast
B) Chromosome
C) Lysosomes
D) Ribosome
10. In the ovule, meiosis occurs in
A) Megaspore
B) Archesporium
C) Megaspore mother cell
D) Sporogenous cell
11. Double fertilisation is seen in
A) Angiosperms
B) Gymnosperms
C) Bryophytes
D) Red algae
12. Fertilisation occurs in the
A) Ovary
B) Ovule
C) Embryo sac
D) Nucellus
13. Which bacterium causes the disease canker on citrus
A) Eruinia amylovora
B) Xanthomonas citrinum
C) Xanthomonas citri
D) Pseudomonas solanacearum
14. In bacterium the respiratory enzymes are situated in
A) Cell membrane
B) Cytoplasm
C) Mitochondria
D) Ribosomes
15. Bacteria having a tuft of flagella at both ends are called
A) Peritrichous
B) Bitrichous
C) Amphitrichous
D) Atrichous
16. A virus that may not destroy the host (bacterial cell) is
A) Virulent phage
B) Temperate phage
C) Cynophage
D) Lysogenic
17. A virion is a
A) Infectious nucleic acid
B) Infectious virus particle
C) Virus parasitic on bacteria
D) Virus parasitic on algae
18. Linkage in plants was first shown in
A) Zea mays
B) Lathyrus odoratus
C) Oenothera Lamarckiana
D) Pisum sativum
19. Colour blindness is due to one
A) recessive allele in females
B) dominant allele in females
C) dominant allele in males
D) recessive allele in males
20. One gene one enzyme hypothesis was proposed by
A) Mendel
B) Calvin
C) Beadle and Tatum
D) Khorana
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Correct answers: