BOTANY PG TRB PREPARATION ONLINE TEST - 7

Botany PGTRB Online Test

1. Which is the correct cytological technique for studying chromosomes?
A) Gel filtration
B) Centrifugation
C) Electrophoresis
D) Squash
2. Choose the maidenhair tree
A) Pinus
B) Ginkgo biloba
C) Adiantum Sp.
D) Psilotum
3. "Crystal Violet" stain stains which one of the following organisms?
A) Gram positive bacteria
B) Fungal mycelium
C) Algal filaments
D) Gram negative bacteria
4. Which species is the aquatic species of Riccia? /
R.attenuata
R.Ciliata
R.Fluitans
R.Officinalis
5. Which one of the associations represents the nitrogen fixing phenomenon in Leguminous plants?
A) Algae and Bacteria
B) Algae and Fungi
C) Algae and Higher plants
D) Rhizobium and roots
6. Which disease is caused by Xanthomonas strain in paddy?
A) Citrus canker
B) Blight disease of paddy
C) Blast disease of paddy
D) Tungro disease of paddy
7. Choose the ergastic substance made up of calcium carbonate crystal
A) Cystolith
B) Druses
C) Lithocytsts
D) Raphides
8. Choose the aquatic plant showing heterophyllous habit
A) Ficus heterophylla
B) Euphorbia heterophylla
C) Sagittaria sagittifolia
D) Eucalyptus globulus
9. Which spore production in Puccinia graminis does not require a host
A) Uredospores
B) Basidiospores
C) Pycniospores
D) Aecidiospores
10. Choose the type of stele present in Lycopodium clavatum stem
A) Plectostele
B) Mixed protostele
C) Polystele
D) Siphonostele
11. The relationship between fungi and algae in lichens is known as
A) Mutualism
B) Parasitism
C) Commensalism
D) Saprophytism
12. Which family does not belong to the order Ranales in Bentham & Hooker classification?
A) Annonaceae
B) Ranunculaceae
C) Caryophyllaceae
D) Magnoliaceae
13. Which one is not the fossil type?
A) Petrification
B) Compressions
C) Impressions
D) Amber
14. The one role that does not correspond to the industrial uses of bacteria is
A) Vinegar production
B) Alcohol production
C) Fibre setting
D) Soil fertility
15. Which one is not a clearing agent?
A) Xylene
B) Chloroform
C) Benzene
D) Acetone
16. Which is the wrong method for maceration technique?
A) Schultze's method
B) Jeffery's method
C) Harlow's method
D) Harris method
17. Which symptom is not a viral symptom?
A) Mosaic
B) Vein clearing
C) Canker
D) Vein banding
18. Which is not an attribute of enzyme?
A) They are protein in nature
B) They are used up in reaction
C) They speed up rate of biochemical reaction
D) They are specific in nature
19. Which is not an essential micronutrient?
A) B
B) Ni
C) Mn
D) Co
20. The sporophyte of one of the following generas is not differentiated into foot, seta and capsule
A) Marchantia
B) Polytrichum
C) Riccia
D) Porella
Score =
Correct answers: