Which of the following is not an advantage of cross pollination in angiosperms-

The correct option is B more variations in progeny Cross pollination involves transfer of pollen from one flower to stigma of another flower [ of same species ...

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Byju's Answer

Standard VII

Biology

Sexual Reproduction in Flowering Plants

Which of the ...

Question

Which of the following is an advantage of cross-pollination in angiosperms?

more flower production

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more variations in progeny

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more seed production

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all of the above.

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Solution

The correct option is
B

more variations in the progeny
Cross-pollination involves the transfer of pollen from one flower to the stigma of another flower of the same species. This creates new combinations which don’t happen in self-pollination and thus produce genetic variations which help in the better survival of plants. The major advantage of cross-pollination in angiosperms is more variations in progeny.

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Similar questions

Q. Assertion :Cross-pollination is beneficial because it helps in the production of strong and sturdy progeny. Reason: The new varieties cannot be produced by cross pollination.

Select the correct option.

Statement 1: Wind pollinated flowers need to produce more quantities of pollen grains.
Statement 2: Seeds from cross-pollinated flowers produce weaker and less healthy plants.

Q. Study the given data and answer the questions following the data.

Parental plants cross fertilised and seeds collected	F₁ (first generation offspring)	F₂ (offspring of self pollination of F₁)
Male parent always bore red flowers.	330 seeds sown and observed	Out of 44 seeds, 33 seeds gave plants with red flowers and 11 seeds gave plants with white flowers
Female parent always had white flowers.	All 330 gave red flowers

(a) What is the term for this type of cross?
(b) What does the data of the column marked F₁ indicate?
(c) Express the genotype of the (i) parents (ii) F₁ progeny, and (iii) F₂ progeny.

Q. Note seeds offer several advantage to angiosperms. Firstly since reproductive process such as pollination and fertilisation are independent of water. seed formation is more dependable(reliable)

Q. Study the given data and answer the questions following the data:

\begin{matrix} P a r e n t a l p l a n t s c r o s s & F 1 F i r s t G e n e r a t i o n & F 2 O f f s p r i n g s o f s e l f f e r t i l i s e d a n d s e e d s & o f f s p r i n g s & p o l l i n a t i o n o f F 1 c o l l e c t e d M a l e p a r e n t s a l w a y s & 330 s e e d s s o w n a n d & O u t o f 44 s e e d s 33 s e e d s b a r e r e d f l o w e r s s . & o b s e r v e d . & g a v e p l a n t s w i t h r e d F e m a l e p a r e n t a l w a y s & A l l 330 g a v e r e d & f l o w e r s a n d 11 s e e d s h a d w h i t e f l o w e r s . & f l o w e r s . & g a v e p l a n t s w i t h w h i t e f l o w e r s . \end{matrix}

i. What is the term for this type of cross?
ii. What does the data of the column marked

F_{1}

indicate?
iii. Express the gene type of the (a) parents (b) F1 progeny and (c) F2 progeny

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