Match the following

I)	External fertilization	i)	pollen grain
II)	Androecium	ii)	anther wall
III)	Male gametophyte	iii)	algae
IV)	Primary parietal layer	iv)	stamens

(a)

I	II	III	IV
iv	i	ii	iii

(b)

I	II	III	IV
iii	iv	i	ii

(c)

I	II	III	IV
iii	iv	ii	i

(d)

I	II	III	IV
iii	i	iv	ii

Identify the incorrect pair

(a)

sporopollenin - exine of pollen grain

(b)

tapetum – nutritive tissue for developing microspores

(c)

Nucellus – nutritive tissue for developing embryo

(d)

obturator – directs the pollen tube into micropyle

Assertion(A) : Sporopollenin preserves pollen in fossil deposits
Reason (R): Sporopollenin is resistant to physical and biological decomposition

(a)

assertion is true; reason is false

(b)

assertion is false; reason is true

(c)

Both Assertion and reason are not true

(d)

Both Assertion and reason are true.

Consider the following statement(s)
i) In Protandrous flowers pistil matures earlier
ii) In Protogynous flowers pistil matures earlier
iii) Herkogamy is noticed in unisexual flowers
iv) Distyly is present in Primula

(a)

i and ii are correct

(b)

ii and iv are correct

(c)

ii and iii are correct

(d)

i and iv are correct

In Mendel’s experiments with garden pea, round seed shape (RR) was dominant over wrinkled seeds (rr), yellow cotyledon (YY) was dominant over green cotyledon (yy). What are the expected phenotypes in the F₂ generation of the cross RRYY x rryy?

(a)

Only round seeds with green cotyledons

(b)

Only wrinkled seeds with yellow cotyledons

(c)

Only wrinkled seeds with green cotyledons

(d)

Round seeds with yellow cotyledons and wrinkled seeds with yellow cotyledons

Select the correct statement from the ones given below with respect to dihydrid cross.

(a)

Tightly linked genes on the same chromosomes show very few combinations

(b)

Tightly linked genes on the same chromosomes show higher combinations

(c)

Genes farapart on the same chromosomes show very few recombinations

(d)

Genes loosely linked on the same chromosomes show similar recombinations as the tightly linked ones

Match list I with list II

List I	list II
A. A pair of chromosomes extra with diploid	i) monosomy
B. One chromosome extra to the diploid	ii) tetrasomy
C. One chromosome loses from diploid	iii) trisomy
D.Two individual chromosomes lose from diploid	iv) double monosomy

(a)

A	B	C	D
i	iii	ii	iv

(b)

A	B	C	D
ii	iii	iv	i

(c)

A	B	C	D
ii	iii	i	iv

(d)

A	B	C	D
iii	ii	i	iv

Changing the codon AGC to AGA represents _______.

(a)

missense mutation

(b)

nonsense mutation

(c)

frameshift mutation

(d)

deletion mutation

Mention the contribution of Hofmeister towards Embryology.

A detached leaf of Bryophyllum produces new plants. How?

What is meant by true breeding or pure breeding lines / strain?

What is back cross?

If you cross dominant genotype PV/PV male Drosophila with double recessive female and obtain F₁ hybrid. Now you cross F₁ male with double recessive female.
i) What type of linkage is seen?
ii) Draw the cross with correct genotype.
iii) What is the possible genotype in F₂ generation?

What is the difference between missense and nonsense mutation?

List any two strategy adopted by bisexual flowers to prevent self-pollination.

List out the functions of tapetum.

What is meant by cytoplasmic inheritance

Write the salient features of Sutton and Boveri concept.

Write the steps involved in molecular mechanism of DNA recombination with diagram.

‘Pollination in Gymnosperms is different from Angiosperms’ – Give reasons.

Give a detailed account on parthenocarpy. Add a note on its significance.

Explain polygenic inheritance with an example.

What is gene mapping? Write its uses