List of top Biology Questions

Discolouration and physical deterioration of buildings and sculptures is due to ............ pollutant in air.

In angiosperms, the number of female gametes needed for double fertilization is ............

Which one of the following liquor is obtained by fermentation of fruit juices?

An iron containing red protein is ..............

Lysosomes are ............. dense bodies, and originate from ............

Select the INCORRECT statement.

Select the correct option. Sub order Anthropoidea includes ........
Sub order Anthropoidea includes:
[i)] Lemurs
[ii)] Lorises and tarsiers
[iii)] Old and new world monkeys
[iv)] Apes
[v)] Man

Alcohol abuse shows ill effects on ______ causing its cirrhosis.

The outer chitinous layer of the gemmule of a sponge is secreted by .............

To get a disease-free plant from a virus infected plant, which one of the following can be used as an explant in tissue culture?

In human beings, the follicular cells of Graafian follicle secrete ..........

The tubular, colourless delicate prolongations of epidermal cells are seen in which region of root in plants?

The 70S ribosomes occur in one of the following.

In fishes, .......... maximizes oxygen transfer from water into the gills.

Match the Column-I with Column-II and select the correct option.
Column-I Column-II
a) Metacentric (i) Centromere slightly away from the middle of chromosome
b) Sub-metacentric (ii) Centromere at the tip
c) Acrocentric (iii) Centromere in the middle of chromosome.
d) Telocentric (iv) Centromere near the end of chromosome.

Select the correct match with reference to excretion.

The best method to eliminate harmful recessive genes in the technique of animal breeding is ...........

What is the name of the disease in which a rice plant grows tall, thin, and becomes pale?

Four spheres each of mass \( M \) and radius \( R \) are placed with their centres on the corners of a square of side \( L \). The moment of inertia of the system about any side of the square is

Match the following columns and select the correct option.

Column I		Column II
A	Pituitary gland	I	Grave's disease
B	Thyroid gland	II	Diabetes mellitus
C	Adrenal gland	III	Diabetes insipidus
D	Pancreas	IV	Addison's disease

In relation to Gross primary productivity and Net primary productivity of an ecosystem, which one of the following statements is correct?

Match the following columns and select the correct option.

Column I		Column II
A	Floating Ribs	I	Located between second and seventh ribs
B	Acromion	II	Head of the Humerus
C	Scapula	III	Clavicle
D	Glenoid cavity	IV	Do not connect with the sternum

The specific palindromic sequence which is recognized by EcoRI is:

Match the following with respect to meiosis:

	Column I		Column II
A	Bt cotton	I	Gene therapy
B	Adenosine	II	Cellular defence deaminase deficiency
C	RNAi	III	Detection of HIV infection
D	PCR	IV	Bacillus thuringiensis

Presence of which of the following conditions in urine are indicative of Diabetes Mellitus ? (1) Uremia and Ketonuria (2) Uremia and Renal Calculi (3) Ketonuria and Glycosuria (4) Renal calculi and Hyperglycaemia