Refer to NEET UG Biology Sexual Reproduction in Flowering Plants MCQs provided below. NEET Full Syllabus Biology MCQs with answers available in Pdf for free download. The MCQ Questions for Full Syllabus Biology with answers have been prepared as per the latest syllabus, NEET books and examination pattern suggested in Full Syllabus by NEET, NCERT and KVS. Multiple Choice Questions for Sexual Reproduction in Flowering Plants are an important part of exams for Full Syllabus Biology and if practiced properly can help you to get higher marks. Refer to more Chapter-wise MCQs for NEET Full Syllabus Biology and also download more latest study material for all subjects
MCQ for Full Syllabus Biology Sexual Reproduction in Flowering Plants
Full Syllabus Biology students should refer to the following multiple-choice questions with answers for Sexual Reproduction in Flowering Plants in Full Syllabus. These MCQ questions with answers for Full Syllabus Biology will come in exams and help you to score good marks
Sexual Reproduction in Flowering Plants MCQ Questions Full Syllabus Biology with Answers
IMPORTANT POINTS
- Reproduction is the most important feature of living organisms.
- It is a process of producing offspring, ie., the next generation, which is a means of self-perpetuation.
- In sexual reproduction, fusion of male and female gametes takes place.
- Flowers are reproductive organs of plants.
- A typical flower has four whorls – From the outer side
- stamens are actually microsporophylls. It is a male reproductive part.
It has three parts
(1) Anther
(2) connective and
(3) Filament.
- Anther is bilobed structure having four microsporangia.
- It’s wall has four layers (i) Epidermis (ii) Endothecium (iii) middle layers and (iv) Tapetum.
- Microsporangium at the centre possesses sporogenous tissue.
- The sporogenous tissue by meiotic division produces large number of microspore tetrads.
- Each microspore matures to form pollen grain.
- Pollen wall is two layered. (i) Exine – outer hand layer (ii) Intine – Inner thin layer.
- Exine has prominent apertures called Germpores, at which place sporopollenin is absent.
- Intine develops as a pollen tube and comes out of germ pores.
- During further development of male gametophyte, the pollen nucleus divides to form (1) vegetative cell / nucleus and (2) Generative cell / nucleus. Vegetative nucleus disintegrater later on and the generative nucleus divides to produces two male gametes.
- A Gynoecium (pistil) is like megasporophyll.
- It is female reproductive part.
- It has three region (i) Stigma (ii) Style (iii) Ovary.
- Ovule (megasprangium) is developed from the placenta inside the ovarium cavity.
- The stalk of the ovule is called funicle. Ovule is covered by one or two integuments; leaving a small opening called micropyle.
- Only one megaspore mother cell located towards micropylar divides meiotically to form four haploid megaspore arranged linearly called linear tetrad.
- Of the four only one becomes functional. It forms female gametophyte (Embryo sac)
- The mature embryo sac is 7 celled; but 8 nucleated.
- Here 3 nuclei get organized into an egg-apparatus, which consist of 1 egg cell and two synergids, toward micropylar end.
- While towards challazal end, three nuclei get organized to form antipodal cells.
- From each end one nuclei each comes in the middle, untie to form one cell, called secondary nucleus, which has two nuclei.
- Pollination -
- The process of transfer of pollen grain from the anther to the stigma is called pollination.
- Pollination are of two types (1) self and (2) cross.
- Self-pollination can occur in bisexual as well as unisexual flowers while cross pollination is possible only in unisexual flowers naturally.
- Homogamy and cleistogamy are the adaptations for self-pollination while Dichogamy is for selfsterility.
- Hetrostyled is for cross pollination.
- Different pollinating agents are
(a) Abiotic - (i) wind and (ii) water.
(b) Biotic animals like , Insects, birds etc.
- pollen – pistil interaction involves all events from landing of pollen grains to the stigma until the pollen tube enters the embryo sac.
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NEET Full Syllabus Biology Sexual Reproduction in Flowering Plants MCQs
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