Biology - Online Test
Q1. Which form of carbon is absorbed by the hydrophytes through their general body surface?
Answer : Option B
Explaination / Solution:
Hydrophytes are those plants that grow in water. Hydrophytes can absorb Bicarbonates through their general body surface.
Q2. Those bronchioles which divide into alveolar ducts are called as :
Answer : Option C
Explaination / Solution:
Terminal bronchioles give rise to respiratory bronchioles that ultimately lead to the alveoli. Exchange of gases takes place in alveoli with blood veseels.
Q3. Which of the following helps in absorption of phosphorus from soil by plants?
Answer : Option C
Explaination / Solution:
Anabaena is a photoautotrophic algae that generally grows in rice field. It increase the nitrogen in soil along with it also help in absorption of phosphorous from the soil by the plants.
Q4. Project elephant started in the year:
Answer : Option A
Explaination / Solution:
Project Elephant (PE) was launched by the Government of India in the year 1992 as a Centrally Sponsored Scheme with following objectives:
- To protect elephants, their habitat & corridors
- To address issues of man-animal conflict
- Welfare of captive elephants
Q5. Haemocoel is found in
Answer : Option C
Explaination / Solution:
Haemocoel is the main body cavity of invertebrates such as insects. It is also found in pila which does not contain blood circulating system.
Q6. What is the function of germ pore?
Answer : Option A
Explaination / Solution:
Pollen grain is covered by two layers. The outer layer is called exine, made up of tough material. The inner layer is intine. There is a small opening in exine layer through which pollen grain germinate to form pollen tube.
Q7. Failure of testes to descend into scrotum is called
Answer : Option A
Explaination / Solution:
Cryptochidism is an abnormal condition in male reproductive system in which scrotum does not descend outside the abdominal condition. The males may be not able to produce fertile sperm.
Q8. Important site for formation of glycoproteins and glycolipids is
Answer : Option B
Explaination / Solution:
Synthesis of glycoproteins and glycolipids take place in Golgi apparatus inside the cell. Golgi apparatus is located near nucleus of the cell.
Q9. A human male produces sperms with the genotypes AB ,Ab , aB , ab pertaining to two diallelic characters in equal proportions. What is the corresponding genotype of this person?
Answer : Option A
Explaination / Solution:
The genotype AaBb of a male produce gametes AB,Ab, aB and ab in equal proportion as the law of segregation.
Q10. Ramesh has Rh antigen and Anti-A as well as Anti-B antibodies in his blood. During blood transfusion he can receive blood from :
Answer : Option D
Explaination / Solution:
Since he has both antibodies A and Band has Rh antigen and hence has O+ blood group. So, he can receive blood from O-positive blood group.
