Questions with Answer Biology
1 : One of the commonly used plant growth hormone in tea plantations is
A: ethylene
B: abscissic acid
C: zeatin
D: indole-3-acetic acid
Correct Answer: D
2 : Jaundice is a disorder of
A: excretory system
B: skin and eyes
C: digestive system
D: circulatory system
Correct Answer: C
3: Kranz anatomy is one of the characteristics of the leaves of
A: potato
B: wheat
C: sugarcane
D: mustard
Correct Answer: C
4: In Antirrhinum, two plants with pink flowers were hybridized. The F, plants produced red, pink and white flowers in the proportion of 1 red, 2 pink and 1 white. What could be the genotype of the two plants used for hybridization? Red flower colour is determined by RR, and white by rr genes.
A: rrrr
B: RR
C: Rr
D: rr
Correct Answer: C
5: Transport of food material in higher plants takes place through
A: companion cells
B: transfusion tissue
C: tracheids
D: sieve elements
Correct Answer: D
6: Which one of the following is monoecious?
A: Marchantia
B: Cycas
C: Pinus
D: Date palm
Correct Answer: C
7: A cross in which an organism showing a dominant phenotype is crossed with tbri receseive parent in order to know its genotype is called
A: monohybrid cross
B: back cross
C: test cross
D: dihybrid cross
Correct Answer: C
8: The Indian rhinoceros is a natural inhabitant of which one of the Indian states?
A: Uttarakhand
B: Uttar Pradesh
C: Himachal Pradesh
D: Asom
Correct Answer: D
9: Black (stem) rust of wheat is caused by
A: Alternaria solani
B: Ustilago nuda
C: Puccinia graminis
D: Xanthomonas oryzae
Correct Answer: C
10: A person suffering from a disease caused by Plasmodium, experiences recurring chill and fever at the time when the
A: sporozoites released from RBCs are being rapidly killed and broken down inside spleen
B: trophozoites reach maximum growth and give out certain toxins
C: parasite after its rapid multiplication inside RBCs ruptures them, releasing the stage to enter fresh RBCs
D: mierogametcytes and megagametocytes are being destroyed by the WBCs
Correct Answer: C
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