If both parents are heterozygous for a trait, the probability that an offspring will be recessive for that trait is

Low annual rainfall, sparse vegetation, high diurnal temperatures and cold nights are characteristic features of the A. B. C. D.

Yeast respires anaerobically to convert simple sugar to carbon (IV) oxide and

Chemosynthetic organisms are capable of manufacturing their food from simple inorganic substances through the process of

The main distinguishing features between the soldier termite and other members of the caste are the A. B. C. D.

Circulation of blood to all parts of the body except the lungs is through

The barrier between maternal and foetal blood is the

A plant that grows on another plant without apparent harm to the host plant is called

Given the equation:
6CO22 + 6H22O → C66H1212O66 + 6O22 {Under sunlight & Chlorophyll)

The process represented by the above equation is?

When the mixture of a food substance and Benedict's solution was warmed, the solution changed from blue to black-red. This indicates the presence of

Parental care is exhibited by

In which plantation are all the trees between the height of 2-4m?

One of the functions of xylem is

Which of the following groups of cells is devoid of true fungi nuclei

The part of the human gut that has an acidic content is the

A food chain always begins with a A. B. C. D.

The structure that joins the two strands of a chromosome together is the?

The chromosome number of a cell before and after the process of meiosis is conventionally represented as

A dilute solution of phenylthiocarbamide tastes bitter to some people and is tasteless to others. This is an example of

The mode of nutrition of sun dew and bladder wort can be described as

Mycorrhizae promote plant growth by

I. Adoption of appropriate nocturnal habits
II. Burrowing
III. Adjusting their internal body temperature.
IV. Possession of many sweat pores.
Which of the above are ways in which desert animals adapt to extreme heat of the environment?

The dominant phase in the life cycle of a fern is the?

Which of the following organisms is mainly found in the marine habitat? A. B. C. D.

Given the equation:
6CO2 + 6H2O → C6H12O6 + 6O2 {Under sunlight & Chlorophyll)
The oxygen given off during the above process is derived from

The cilia in paramecium are used for

People suffering from myopia

The average number of individuals of a species per unit area of the habitat is the A. B. C. D.

In the male reproductive system of a mammal, sperm is stored in the A.  B. C. D.

The activity of an organism which affects the survival of another organism in the same habitat constitutes A. an edaphic factor

The vector for yellow fever is

A pair of genes that control a trait is referred to as A. B. C. D.

I. Stomata → Spirogyro
II. Alveoli → Earthworm
III. Malpighian tubule → Mammal
IV. Contractile vacuole → Protozoa.
Which of the above structures is correctly matched with the organisms in which it is found?

The flippers of a whale and the fins of a fish are examples of

Thyroxine and adrenalin are examples of hormones which control

The sheet of muscle that separates the thoracic and the abdominal cavities is the

Which of the following is NOT a function of the nucleus of a cell?

The loss of soil through erosion can be reduced by

The oily substance that lubricates the mammalian hair to keep it flexible and water repellent is secreted by the

At what stage in the life history of a mammal is the sex of an individual set?