Zoology - Online Test
Q1. Which of the followings is also called sac fungi that live parasitically and in various habitats?
Answer : Option A
Explaination / Solution:
Ascomycetes is called as sac fungi that live parasitically and in various habitats. They are responsible for a number of fungal disease in plants.
Q2. Smog which doesn’t contain any secondary pollutants is
Answer : Option D
Explaination / Solution:
Classical smog does not contain any secondary pollutants. It is a mixture of fog, sulfur dioxide and coal smoke particulates. Photochemical smog is formed by chemical reactions of sunlight, nitrogen oxide and voltalic organic compounds in the atmosphere to form secondary pollutants.
Q3. In animal cells, during G2 phase
Answer : Option B
Explaination / Solution:
During the G2 phase, proteins and RNA are synthesised in preparation for mitosis while cell growth continues.
Q4. Plasmid is a
Answer : Option D
Explaination / Solution:
Plasmid is a small DNA molecule within a cell that is physically separated from a chromosomal DNA and can replicate independently. Plasmid is most commonly found in bacteria as small circular, double stranded DNA molecule.
Q5. Adult human kidney is metanephric. So, first embryonic tubules formed in vertebrates during embryonic development are :
Answer : Option C
Explaination / Solution:
adult human kidney is metanephric, the third and final excretory organ that develops in a vertebrate embryo. First embryonic tubules formed in vertebrates during embryonic development are pronephric.
Q6. The first photo-autotroph organisms were
Answer : Option C
Explaination / Solution:
The first photo-autotroph organisms were bacteria. They are still present on earth in different form ranging from chemoautotrophs, autotrophs and heterotrophs.
Q7. International Code of Biological Nomenclature is applied to
Answer : Option A
Explaination / Solution:
Since biology deals with both plants and animals, the international code of biological nomenclature is applied to both plants and animals. Hence, the correct option is Both (2) and (3).
Q8. A meromyosin molecule doesn’t contain :
Answer : Option B
Explaination / Solution:
Each meromyosin has two important parts, a globular head with a short arm and a tail.
Q9. Cry genes can be transferred as they are present in a bacteria in
Answer : Option A
Explaination / Solution:
Cry gene is present in plasmid of bacterium. This gene can be easily separated from plasmid and included into another crops to provide resistance against pests and insects.
Q10. Fruit softening is promoted by polygalacturonase which degrades
Answer : Option C
Explaination / Solution:
Pectin present in cell wall of plant cell is responsible for hardness of fruit coat. Polygalacturonase is induced into the fruit that degrade the pectin and soften the fruit.
