11. Which blood group is referred to as universal recipient?
[A] AB +ve
[B] AB -ve
[C] O +ve
[D] O -ve
Show Answer
Correct Answer: A [AB +ve]
Notes:
Persons with AB +ve blood group are called as universal recipients as they can get blood from persons with any of the blood groups. AB -ve cannot be regarded as universal donor as it cannot accept blood from persons with Rh factor.
12. Which of the following branch of biology deals with the study of mycoplasma?
[A] Mycoplasmology
[B] Limnology
[C] Ethnobotony
[D] None of these
Show Answer
Correct Answer: A [Mycoplasmology]
Notes:
Mycoplasma is a genus of bacteria that do not have a cell wall surrounding the cell membrane.
13. Who is called the father of Immunology?
[A] Gregor Mendel
[B] Edward Jenner
[C] Francis Galton
[D] Hugo de Vries
Show Answer
Correct Answer: B [Edward Jenner]
Notes:
Edward Jenner is an English surgeon and discoverer of smallpox vaccination. That’s why he is called the father of immunology.
14. Which of the following was invented by Jonas Salk?
[A] Polio Drop
[B] Polio Vaccine
[C] BCG Vaccine
[D] aspirin
Show Answer
Correct Answer: B [Polio Vaccine]
Notes:
The first effective polio vaccine was developed in 1952 by Jonas Salk. Polio, or poliomyelitis, is a disabling and life-threatening disease caused by the poliovirus.
15. Which statement is true for the capsid?
[A] It consists of capsomeres
[B] This the outermost layer of most viruses
[C] It protects genetic material
[D] All of the above
Show Answer
Correct Answer: D [All of the above]
Notes:
A capsid is the protein shell of a type of virus, which encloses its genetic material.
16. Who among the following discovered the cell wall?
[A] Robert Hooke
[B] Boveri
[C] J Rhodin
[D] Van Beneden
Show Answer
Correct Answer: A [Robert Hooke]
Notes:
A plant cell wall was first observed and named by Robert Hooke in 1665.
17. In Bryophyta, the adult plant body is__?
[A] Sporophyte
[B] Epiphyte
[C] Sporophyll
[D] Gametophyte
Show Answer
Correct Answer: D [Gametophyte]
Notes:
A gametophyte is one of two alternative multicellular stages in the life cycle of plants and algae.
18. What is double fertilization?
[A] formation of the plant from a seed without fertilization or normal sexual reproduction
[B] the fusion of one female gametophyte with two male gametophytes
[C] interaction between pollen grains and the stigma needs to be understood properly
[D] None of these
Show Answer
Correct Answer: B [the fusion of one female gametophyte with two male gametophytes]
Notes:
Double fertilization is the fusion of one female gametophyte with two male gametophytes.
19. Where is the petiole found?
[A] roots
[B] stem
[C] leaves
[D] fruits
Show Answer
Correct Answer: C [leaves]
Notes:
The petiole is the stalk that attaches the blade to the base of the leaf.
20. Earthworms and leeches belong to which phylum?
[A] Arthropoda
[B] Annelida
[C] Hemichordata
[D] Chordata
Show Answer
Correct Answer: B [Annelida]
Notes:
Earthworms and leeches belong to the phylum Annelida. They can be aquatic or terrestrial, free-living, or even parasitic. They have organs called nephridia for excretion.
