Biology Practice Question and Answer
8 Q: Who explained the structure and reproductive system of algae in 1935?
636 064a2ac8f3662c8741d19ec68
64a2ac8f3662c8741d19ec68- 1MOP Iyengarfalse
- 2FE Fritschtrue
- 3William Henryfalse
- 4Carolus Linnaeusfalse
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Answer : 2. "FE Fritsch"
Explanation :
1. Explain the structure and reproductive system of algae in 1935. It was from F. E. Fritch.
2. The study of algae is known as phycology. It is also known as Algology.
3. Algae are largely aquatic (both fresh and sea water) organisms, which are chlorophyll bearing, simple, thalloid and autotrophic in nature.
Q: Deficiency of which vitamin results in inflammation of skin and eczema along with diarrhoea?
634 06389b4b5a528960cccf43e74
6389b4b5a528960cccf43e74- 1Ascorbic acidfalse
- 2Folic acidfalse
- 3Nicotinic acidtrue
- 4Pantothnic acidfalse
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Answer : 3. "Nicotinic acid"
Q: Which of the following virus was first discovered?
632 061110d24f65c04691be9d153
61110d24f65c04691be9d153- 1Poliofalse
- 2HTLVfalse
- 3TMVtrue
- 4HIVfalse
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Answer : 3. "TMV"
Q: "B" represents the gene for brown coat colour and “b” represents the gene for white coat colour. In the cross BB x bb all the offsprings have a brown coat. Which genetic principle is illustrated by this cross?
632 062ebdbdbceafbe581b7c9cf6
62ebdbdbceafbe581b7c9cf6- 1Multiple allelesfalse
- 2Dominancetrue
- 3Co-dominancefalse
- 4Crossing-overfalse
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Answer : 2. "Dominance "
Q: The yeast used in making bread is?
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61110c11f65c04691be9d09f- 1acts as a catalyst for fermentationtrue
- 2does not help in the process of fermentationfalse
- 3acts as a protectorfalse
- 4makes it tastierfalse
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Answer : 1. "acts as a catalyst for fermentation"
Q: Tissues are made in the body?
623 061110b7bf65c04691be9d057
61110b7bf65c04691be9d057- 1from fatfalse
- 2Carbohydratesfalse
- 3proteintrue
- 4Vitaminfalse
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Answer : 3. "protein"
Q: Are carriers of infectious diseases?
613 06036348aa0666c3c8505f82f
6036348aa0666c3c8505f82f- 1flyfalse
- 2Dogsfalse
- 3Mosquitofalse
- 4None of thesetrue
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Answer : 4. "None of these"
Q: Anemia disease is caused due to deficiency of which vitamin?
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624ec0aa67b2505d7e5b0d95- 1Vitamin B12true
- 2Vitamin B1false
- 3Vitamin B3false
- 4Vitamin Cfalse
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Answer : 1. "Vitamin B12"
Explanation :
Symptoms of vitamin B12 deficiency or folate deficiency anemia develop slowly and are similar to those of other types of anemia, such as fatigue, weakness, and pale skin. Vitamin B12 deficiency can also cause nerve damage, the main symptoms of which include tingling, loss of touch, and muscle weakness. Confusion can arise when Vitamin B12 becomes too low. Vitamin B12 deficiency anemia in the elderly can be mistaken for dementia. This happens because of similar symptoms.