Biology - Online Test
Q1. Gustatoreceptors are responsible for the sense of :
Answer : Option C
Explaination / Solution:
Gustatoreceptors are responsible for the sense of taste. Gustatory receptors are located inside taste buds on the tongue.
Q2. Choose the odd one out among the following: Dryopteris, Pteris, Adiantum, Selaginella.
Answer : Option C
Explaination / Solution:
Selaginella belong to class Lycopsida and other plants (Dryopteris, Pteris, Adiantum) belong to class Pteropsida of Pteridophytes.
Q3. Golgi apparatus are the site for formation of
Answer : Option B
Explaination / Solution:
Golgi apparatus is the important site of formation of glycoproteins and glycolipids.
Q4. What is not true for genetic code?
Answer : Option B
Explaination / Solution:
Genetic code is unambiguous, universal and degenerate. Codon in mRNA is read in contiguous fashion without any gap. There are no punctuations during reading of Codon.
Q5.
The excitation of electrons,finally down-hill to causing it to be reduced to is called as
Answer : Option C
Explaination / Solution:
Excitation of electrons, transfer to another accepter, and finally down-hill to causing it to be reduced to is called the Z scheme.
Q6. The condition favourable for dissociation of oxygen from oxyhaemoglobin in the tissues is
Answer : Option A
Explaination / Solution:
In tissues, low , high , high concentration and higher temperature exist,the conditions are favourable for dissociation of oxygen from the oxyhaemoglobin.
Q7. “Blue revolution” is related to
Answer : Option D
Explaination / Solution:
Blue revolution is related to fish production. This revolution is brought about by using aquaculture and pisciculture on the line of green revolution for wheat production.
Q8. The newest addition to India’s national parks is:
Answer : Option D
Explaination / Solution:
Located in the Himalayan foothills, it is contiguous with the Royal Manas National Park in Bhutan. The park is known for its rare and endangered endemic wildlife such as the Assam roofed turtle, hispid hare, golden langur and pygmy hog. It is established in 1990.
Q9. To exert their effect on the target cell, water soluble hormones will need to bind with
Answer : Option B
Explaination / Solution:
Hormone receptors present on the cell membrane of the target cells are called membrane-bound receptors and the receptors present inside the target cell are called intracellular receptors, mostly nuclear receptors (present in the nucleus). Binding of a hormone to its receptor leads to the formation of a hormone-receptor complex.
Q10. The phylum in which adults exhibit radial symmetry and larva exhibit bilateral symmetry is
Answer : Option B
Explaination / Solution:
The animals of Phylum – Echinodermata have an endoskeleton of calcareous ossiclesand, hence, the name Echinodermata. All are marine with organ-system level of organisation. The adult echinoderms are radially symmetrical but larvaeare bilaterally symmetrical.
They are triploblastic andcoelomate animals. Digestive system is complete with mouthon the lower (ventral) side and anus on the upper (dorsal)side.
