(C) The life cycle of organisms consists of three phases: juvenile phase,reproductive phase,and senescent phase. In annual and biennial plants,these p

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(C) The life cycle of organisms consists of three phases: juvenile phase,reproductive phase,and senescent phase. In annual and biennial plants,these phases are clearly defined as they complete their life cycle within one or two years. However,in perennial plants,the transition between these phases is not clearly defined,as they can flower and fruit repeatedly over many years.

Class 12 Biology Sexual Reproduction in Flowering Plants Mix Examples-Sexual Reproduction in Flowering Plants

Medium

In which type of plants is the senescent phase not clearly defined?

A
Annuals
B
Biennials
C
Perennials
D
Both $A$ and $B$

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Class 12 Questions

Class 12

Biology Questions

Chapter

Sexual Reproduction in Flowering Plants

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Mix Examples-Sexual Reproduction in Flowering Plants

Which of the following plants produce seeds and possess a pollen tube?

Medium

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In angiosperms,when pollen grains influence the endosperm,what is it called?

Medium

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If a plant bears only staminate flowers, what is it called?

Easy

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Cleistogamous flowers are found in ....

Medium

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Match Column-$I$ with Column-$II$ and select the correct option using the codes given below:

Column-$I$ Column-$II$

$(A)$ Pistils fused together $(1)$ Gametogenesis

$(B)$ Formation of gametes $(2)$ Monocarpellary

$(C)$ Hyphae of higher Ascomycetes $(3)$ Syncarpous

$(D)$ Unisexual female flower $(4)$ Dikaryotic

Column-$I$	Column-$II$
$(A)$ Pistils fused together	$(1)$ Gametogenesis
$(B)$ Formation of gametes	$(2)$ Monocarpellary
$(C)$ Hyphae of higher Ascomycetes	$(3)$ Syncarpous
$(D)$ Unisexual female flower	$(4)$ Dikaryotic