Which one of the following population interactions is widely used in medical science for the production of antibiotics?

• Commensalism

• Mutualism

• Amensalism

• Parasitism

Niche is

• all the biological factors in the organism's environment

• the physical space where an organism lives

• the functional role played by the organism where it lives

• the range of temperature that the organism needs to live

Match the following Columns

Column I		Column II
A.	Opuntia	1.	Stem thorns
B.	Asparagus	2.	Phylloclades
C.	Citrus	3.	Cladodes

• A	B	C
  1	2	3

• A	B	C
  2	3	1

• A	B	C
  3	2	1

• A	B	C
  2	1	3

The scientific name of gharial is

• Naja bun garus

• Gaviails gangeticus

• Hemidactylusflavivridis

• None of the above

Predation and parasitism are which type of interactions.

• (+, +)

• (+, 0 )

• ( -)

• (+, -)

The ultimate source of energy for a living being is

• Sunlight

• ATP

• Fats

•  Carbohydrates

Which of these is used to control human population?

• Estrogen + progesterone

• IUCD and MTP

• Tubectomy and vasectomy

•  All of the above

48.

Which of the following is a total root parasite?

• Cuscuta

• Rafflesia

• Santalum

• Monotrapa

Which part of the animal virus is not produced in multiple copies?

• Capsid

• Proteins

• Envelops

• Ribosome

Biotic potential or potential natality means

• Natural increase of population under ideal/optimum conditions

• The potential of the organism in a biome

• Number of organisms in a biome

• Species of maximum number in a population