Reproduction in flowering plants Quiz-04
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NEET is the most famous and important medical entrance examination held in our country. This exam is an objective type, an offline test which includes 4 sections namely– Physics, Chemistry, Botany, and Zoology. The maximum marks that can be scored are 720 marks and have 180 questions.
About half of the paper consists of questions from Biology, as the NEET exam essentially focuses on capacitating students to go for seats in medical courses. One of the most significant and crucial sections in the NEET exam is of Biology. It comprises of theories, descriptions, discoveries, diagrams, definitions, explanations of differences, and relations. The majority of the topics covered in the NEET syllabus are from the NCERT syllabus of Class 11 & 12 and other related sources become part of the rest of the syllabus.
Clear Exam curates a list of articles selected by professionals who recommend the highly vital topics for NEET exams. The table below takes you directly to the respective topic where the in-depth article and the MCQs are available for an easy and productive learning experience. Prior to solving NEET question papers or practicing mock tests, you must ensure to study the basic concepts in NEET and practice a few sample questions related to this exam. Students will be covered for all their studies as the topics are available from basics to even the most advanced.
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Q1.
Microsporogenesis is
Solution
(a) Microsporogenesis During developmental phase of anther the cells of sporogenous tissue undergoes meiotic division to form microspore tetrad. The process of formation of microspore from pollen mother cell is called microsporogenesis. The microspores are formed and arranged in a group of four cells called microspore tetrad. Microspore develops into the pollen grain and represents the male gametophyte
(a) Microsporogenesis During developmental phase of anther the cells of sporogenous tissue undergoes meiotic division to form microspore tetrad. The process of formation of microspore from pollen mother cell is called microsporogenesis. The microspores are formed and arranged in a group of four cells called microspore tetrad. Microspore develops into the pollen grain and represents the male gametophyte
Q2.
Ovule integument gets transformed into
Solution
(a) The common asexual reproductive structures in sponges are gemmules, and in penicillium are conidia. The vegetative propagules in Agave, water hyacinth and bryophyllum are bulbil, offset and leaf buds, respectively.
(a) The common asexual reproductive structures in sponges are gemmules, and in penicillium are conidia. The vegetative propagules in Agave, water hyacinth and bryophyllum are bulbil, offset and leaf buds, respectively.
Q3.
Which one of the following is not a correct explanation of cross-pollination?
Solution
(d) Cross pollination is the transfer of pollen grains of a male flower to the stigma of female flower, which occurs either on the same plant (monoecious) or on the different plant (dioecious).
(d) Cross pollination is the transfer of pollen grains of a male flower to the stigma of female flower, which occurs either on the same plant (monoecious) or on the different plant (dioecious).
Q4.
Ornithophily refers to the pollination by which of the following?
Solution
(b) Allogamous pollination performed by birds is called ornithophily. Entomophily is pollination carried out by insects.
(b) Allogamous pollination performed by birds is called ornithophily. Entomophily is pollination carried out by insects.
Q5.
‘Cells at the chalazal end are called synergid cells’. The above statement is
Solution
Q6.
Unisexuality of flowers prevents
Solution
(a) Unisexuality of flowers prevents autogamy(self pollination) but not geitonogamy(pollination between separate male and female flowers on the same plant).
(a) Unisexuality of flowers prevents autogamy(self pollination) but not geitonogamy(pollination between separate male and female flowers on the same plant).
Q7.
Solution
Q8.
Ruminate endosperm is found in the seeds of family
Solution
(d) Mature endosperm with any degree of irregularity and unevenness in its surface contour is called ruminate endosperm. It is known to occur In about 32 families of angiosperms. In family-Annonaceae, the ruminate endosperm is found.
(d) Mature endosperm with any degree of irregularity and unevenness in its surface contour is called ruminate endosperm. It is known to occur In about 32 families of angiosperms. In family-Annonaceae, the ruminate endosperm is found.
Q9.
Some plant have a habit of harbouring ants to save the plants from damage by other animals which is known as
Solution
(b) Myrmecophily id defence mechnism through ‘Ants’. Some plants (e.g., mango, litchi, guava) protect the plants from attack of other animals by harbouring ants on them.
(b) Myrmecophily id defence mechnism through ‘Ants’. Some plants (e.g., mango, litchi, guava) protect the plants from attack of other animals by harbouring ants on them.
Q10.
Filiform apparatus is a characteristic feature of
Solution
(b) Filiform apparatus is finger-like projection of the cell membrane of synergids or helper cells at the micropylar end of the ovule. Filiform apparatus is rich in polysaccharides and chemottracts pollen tube towards egg.
(b) Filiform apparatus is finger-like projection of the cell membrane of synergids or helper cells at the micropylar end of the ovule. Filiform apparatus is rich in polysaccharides and chemottracts pollen tube towards egg.
