#'Size of the flower' Colour of flower' Characteristic' feature of pollen grain; A 'mall ' brightly coloured ' Light weight and non-sticky;

The structure of bilobed anther consists of
A. 2 thecae, 2 sporangia
B. 4 thecae, 4 sporangia
C. 4 thecae, 2 sporangia
D. 2 thecae, 4 sporangia

In the figure of anatropous ovule given below, choose the correct option for the
characteristic distribution of cells within the typical embryo sac




 

The coconut water from tender coconut is
A. cellular endosperm.
B. free nuclear endosperm.
C. both cellular and nuclear endosperm.
D. free nuclear embryo.

Pollen grains are well preserved as fossils because of presence of
A. sporopollenin
B. cellulose
C. lignocellulose
D. pectocellulose

Which of the following statements are true related to Seed X and Y?

SEED X

SEED Y
(i) Seed X is dicot and endospermic or albuminous.
(ii) Seed X is dicot and non-endospermic or non-albuminous.
(iii) Seed Y is monocot and endospermic or albuminous.
(iv) Seed Y is monocot and non-endospermic or non-albuminous.
Choose the correct option with the respect to the nature of the seed
A. (i), (iii)
B. (ii), (iii)
C. (i), (iv)
D. (ii), (iv)

Which of the following statements are correct with respect to hormones secreted by
placenta?
(i) Placenta secretes relaxin during later stage of pregnancy.
(ii) Placenta secretes high amount of FSH during pregnancy.
(iii) Placenta secretes relaxin during initial stage of pregnancy.
(iv) Placenta secretes hCG and hPL during pregnancy.
A. (i) and (iv)
B. (i), (ii) and (iv)
C. (iii) and (iv)
D. (ii), (iii) and (iv)

Figure A shows the front view of the human female reproductive system and Figure
B shows the development of a fertilized human egg cell
Figure A

--- Figure B.

Identify the correct stage of development of human embryo (Figure B) that takes place
at the site X, Y and Z respectively in the human female reproductive system (Figure
A).
Choose the correct option from the table below:

#	X	Y	Z
A	Morula	Fertilized egg	Blastocyst
B	Unfertilized egg	Fertilized egg	Morula
C	Blastocyst	Fertilized egg	Unfertilized egg
D	Fertilized egg	Morula	Blastocyst

Penetration of the sperm in the ovum is followed by
A. formation of first polar body.
B. completion of meiosis II.
C. first meiosis.
D. dissolution of zona pellucida.

The correct sequence of hormone secretion from beginning of menstruation is
A. FSH, progesterone, estrogen.
B. estrogen, FSH, progesterone.
C. FSH, estrogen, progesterone.
D. estrogen, progesterone, FSH.

In the dioecious aquatic plant shown, identify the characteristics of the male flowers
that reach the female flowers for pollination:



option- Size of the flower~~ Colour of flower --  Characteristic feature of pollen grain
A -    small               brightly coloured Light weight and non-sticky
B    large              colourless large and sticky
C    small            white small, covered with mucilage
D    large            colourless           non sticky

Size of the flower	Colour of flower	Characteristic	feature of pollen grain
A	small	brightly coloured	Light weight and non-sticky
B	large	colourless	large and sticky
C	small	white small	covered with mucilage
D	large	colourless	non sticky

The thalamus contributes to the fruit formation in
A. banana.
B. orange.
C. strawberry.
D. guava.5

How many types of gametes would be produced if the genotype of a parent is AaBB?
A. 1
B. 2
C. 3
D. 4