Biology Questions Practice Question and Answer
8 Q: Which of the following statements is/are correct regarding the vegetative propagation of plants?
(1). Vegetative propagation produces a clonal population.
(2). Vegetative propagation helps in eliminating the virus.
(3). Vegetative propagation can be practiced most of the year.
Select the correct answer using the code given below.
1250 062ac7b21f5480112e46cb30d
62ac7b21f5480112e46cb30d- 11 and 3 onlytrue
- 21 , 2 and 3false
- 31 onlyfalse
- 42 and 3 onlyfalse
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Answer : 1. "1 and 3 only "
Q: Malaria is caused by
1248 060fa7f2816158a5eedb4bd63
60fa7f2816158a5eedb4bd63- 1Plasmodium falciparumtrue
- 2Entamoebafalse
- 3Retrovirusfalse
- 4Salmonellafalse
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Answer : 1. "Plasmodium falciparum"
Q: Which of the following organisms is responsible for sleeping sickness?
1239 0642ead7972ca731a991e7ccd
642ead7972ca731a991e7ccd- 1Algaefalse
- 2Protozoatrue
- 3Bacteriafalse
- 4Virusesfalse
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Answer : 2. "Protozoa"
Q: A/an ______ is any substance that causes your immune system to produce antibodies against it.
1236 0644be2dc244f7ecdff5f7a7c
644be2dc244f7ecdff5f7a7c- 1proteinfalse
- 2glucosefalse
- 3plateletfalse
- 4antigentrue
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Answer : 4. "antigen"
Q: Infection of AIDS disease?
1232 060363676a0666c3c85060f1e
60363676a0666c3c85060f1e- 1by airfalse
- 2by animalsfalse
- 3By sexual organstrue
- 4by waterfalse
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Answer : 3. "By sexual organs"
Q: Deficiency of which vitamin results in inflammation of skin and eczema along with diarrhoea?
1228 06389b4b5a528960cccf43e74
6389b4b5a528960cccf43e74- 1Ascorbic acidfalse
- 2Folic acidfalse
- 3Nicotinic acidtrue
- 4Pantothnic acidfalse
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Answer : 3. "Nicotinic acid"
Q: Sponges belong to phylum ______ of the animal kingdom.
1220 064c2509e9e9013486a756bb1
64c2509e9e9013486a756bb1- 1Echinodermatafalse
- 2Poriferatrue
- 3Aschelminthesfalse
- 4Molluscafalse
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Answer : 2. "Porifera"
Explanation :
1. Sponge belongs to Porifera phylum of the animal kingdom.
2. These are primitive multicellular animals. The study of sponges is known as para zoology.
3. Sponges are mostly irregular in shape and have radial symmetry.
4. The body of a sponge has two layers-
- Epidermis: This is the outer layer that helps move water in and out.
- Mesohyl: This is the middle layer which contains the cells of the sponge.
Q: An enzyme produced by HIV that allows the integration of HIV DNA into the host cell’s DNA is:
1218 0607ec5640372d8542895add5
607ec5640372d8542895add5- 1Integrasetrue
- 2Ligasefalse
- 3DNA gyrasefalse
- 4Helicasefalse
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