Biology Practice Question and Answer
8 Q: Which of the following can degrade detritus into simpler inorganic substances?
993 064b5267c36fc1bf576512523
64b5267c36fc1bf576512523- 1Algaefalse
- 2Phytoplanktonfalse
- 3Fungal enzymestrue
- 4Lichensfalse
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Answer : 3. "Fungal enzymes"
Explanation :
1. Fungal enzymes decompose simple inorganic substances.
2. Fungi are a type of microorganisms that decompose organic matter.
3. Enzymes break down organic matter into smaller molecules, which can then be used by the body of the fungus.
Q: Which of the following factors is responsible for the disease called 'Mad Hatter's Disease'?
992 064a2b182d19ae0083334a44d
64a2b182d19ae0083334a44d- 1Inhalation of iron dustfalse
- 2Inhaling silica dustfalse
- 3Mercury poisoningtrue
- 4Vitamin-D deficiencyfalse
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Answer : 3. "Mercury poisoning"
Explanation :
1. Mercury poisoning is responsible for which of the following diseases called 'Mad Hatter's Disease'?
2. Mad Hatter's Disease is a form of mercury poisoning that affects the brain and nervous system.
3. There is a risk of mental and behavioural changes, such as confusion, hallucination, and irritability etc. in this disease.
Q: Are carriers of infectious diseases?
989 06036348aa0666c3c8505f82f
6036348aa0666c3c8505f82f- 1flyfalse
- 2Dogsfalse
- 3Mosquitofalse
- 4None of thesetrue
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Answer : 4. "None of these"
Q: Which group of animals are named because of their spiny skin and a peculiar water-driven tube system that they use for moving around?
983 064b527acefb5ba16688217c6
64b527acefb5ba16688217c6- 1Hemichordatafalse
- 2Aschelminthesfalse
- 3Echinodermatatrue
- 4Molluscafalse
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Answer : 3. "Echinodermata "
Explanation :
1. All the creatures of Echinodermata phylum are marine and have thorny bodies.
2. There is a mass flow system in their body.
3. A specific water-conveying canal system is found, which helps in their movement.
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?
983 062ebdbdbceafbe581b7c9cf6
62ebdbdbceafbe581b7c9cf6- 1Multiple allelesfalse
- 2Dominancetrue
- 3Co-dominancefalse
- 4Crossing-overfalse
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Answer : 2. "Dominance "
Q: What is the osmolarity(in mO smolL–1) in the outer cortex and inner medullary region?
981 063c8fa49bd6d90332092c5a3
63c8fa49bd6d90332092c5a3- 1300 and 900 respectivelyfalse
- 2600 and 300 respectivelyfalse
- 31200 and 300 respectivelyfalse
- 4300 and 1200 respectivelytrue
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Answer : 4. "300 and 1200 respectively"
Q: Pregnant women usually become deficient in
974 06389cb38c878936066e7d992
6389cb38c878936066e7d992- 1Sodium and Calciumfalse
- 2Iron and Sodiumfalse
- 3Calcium and Irontrue
- 4Magnesium and Ironfalse
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Answer : 3. "Calcium and Iron "
Q: A disease named tuberculoris arises?
974 0603632f8a0666c3c8505f38c
603632f8a0666c3c8505f38c- 1Bacteriatrue
- 2Malnutritionfalse
- 3Protozoafalse
- 4by virusfalse
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