11. Which of the following branch of biology deals with management of farms and the science of crop production?
[A] Agrostology
[B] Agaronomy
[C] Agroinformatics
[D] Agronomy
Show Answer
Correct Answer: D [Agronomy]
Notes:
Agronomy is the branch of biology that deals with the management of farms and the science of crop production.
12. What is another name for cyanobacteria?
[A] Blue-green algae
[B] Protists
[C] Golden algae
[D] Slime moulds
Show Answer
Correct Answer: A [Blue-green algae]
Notes:
Cyanobacteria, also called blue-green algae, are microscopic organisms found naturally in all types of water.
13. Viruses are usually divided into several large groups based mainly on?
[A] nature of the host
[B] nucleic acid characteristics
[C] capsid symmetry
[D] diameter of the viroin or nucleocapsid
Show Answer
Correct Answer: A [nature of the host]
Notes:
Viruses are usually divided into several large groups based mainly on nature of the host. A virus is an infectious agent of small size and simple structure that can multiply only in living cells of animals, plants or bacteria.
14. Which of the following structures is responsible for the motility of bacteria?
[A] pilli
[B] flagella
[C] sheath
[D] capsules
Show Answer
Correct Answer: B [flagella]
Notes:
Flagella is responsible for the motility of bacteria. The flagellum is primarily a motility organ. This enables movement and chemotaxis.
15. Which of the following includes ‘club fungus’ in this fungal division?
[A] Zygomycota
[B] Deuteromycota
[C] Basidiomycota
[D] Ascomycota
Show Answer
Correct Answer: C [Basidiomycota]
Notes:
Basidiomycota is one of the two larger divisions. Together with the Ascomycota, they constitute the subfamily Dicarya within the kingdom Fungi.
16. In the process of photosynthesis, light energy is converted into __.
[A] Thermal
[B] Chemical
[C] Kinetic
[D] Physical
Show Answer
Correct Answer: B [Chemical]
Notes:
In the process of photosynthesis, light energy is converted into chemical energy. During photosynthesis, plants absorb carbon dioxide, water and sunlight and release oxygen.
17. In which of the following hormones is stimulation growth factor found?
[A] Gibberellins
[B] Cytokinins
[C] Auxins
[D] Abscisic Acid
Show Answer
Correct Answer: B [Cytokinins]
Notes:
The stimulating growth factor was found to be cytokinin, a hormone that promotes cell division.
18. The canal system in sponges develops due to which of the following?
[A] Porous walls
[B] Gastrovascular system
[C] Reproduction
[D] Folding of inner walls
Show Answer
Correct Answer: D [Folding of inner walls]
Notes:
The canal system in sponges is developed due to the twisting of the body wall. There are three types of canal systems in sponges are ascon type, sycon type, and leucon type.
19. The median moth is present in which of the following reptiles?
[A] Iguanas
[B] Gecko
[C] Venomous lizard
[D] Worm lizards
Show Answer
Correct Answer: D [Worm lizards]
Notes:
The median moth is present in Worm lizards. Worm lizards are a group of squamates usually without legs, which includes over 200 extant species. They are also called amphisbaenians. They are characterized by their long bodies, lack or loss of limbs, and rudimentary eyes.
20. Which of the following bones form the wishbone of birds?
[A] Skull
[B] Hindlimbs
[C] Clavicles
[D] None of the above
Show Answer
Correct Answer: C [Clavicles]
Notes:
The wishbone, or furcula, of birds, is composed of two fused clavicles and the wishbone offers structural support for the wings.
