NEET Biology Sexual Reproduction In Flowering Plants MCQs Set 03

Question. The devices to discourage self pollination are
(a) All of these
(b) Rejection of pollen by stigma of the same flowers
(c) Anther and stigma are placed at different position
(d) Pollen release and stigma receptivity is not synchronised

Answer: A

Question. In monoecious plant like castor and maize
(a) Geitonogamy is not prevented
(b) Geitonogamy is prevented
(c) Autogamy and allogamy are not prevented
(d) Autogamy is not prevented

Answer: A

Question. Select incorrect statement (w.r.t. artificial hybridisation)
(a) Emasculation is removal of anther in their mature condition from bisexual flower
(b) Emasculation is not required in male sterile plants
(c) Unisexual female flower is bagged in bud condition to prevent contamination
(d) Emasculated flowers are bagged in bud condition

Answer: A

Question. Pick out wrong statement
(a) Exine has apertures where sporopollenin is present
(b) Sequoia, a gymnosperm, is one of the tallest tree
(c) Double fertilization is unique to angiosperms
(d) Exine of pollen grains is made up of sporopollenin

Answer: A

Question. Choose the correct option from the following
(a) I, IV are correct but II, III are incorrect
(b) II, III are correct but I, IV are incorrect
(c) I, II are correct but III, IV are incorrect
(d) III, IV are correct but I, II are incorrect

Answer: A

Question. Select the correct statement from the following
(a) There are many embryos of different sizes and shapes in the seeds of orange
(b) Obturator directs the growth of pollen tube towards micropyle of seed
(c) Hanging drop method as in-vivo germination of pollen grain
(d) Embryo arises parthenogenetically from the diploid egg in adventive embryony

Answer: A

Question. Choose the correct option from the following statements.
(a) Only I and II are correct
(b) All are correct
(c) All are incorrect
(d) Only II and IV are correct

Answer: A

Question. Coconut water from a tender coconut is
(a) Free nuclear endosperm
(b) Degenerated nucellus
(c) Immature embryo
(d) Innermost layers of the seed coat

Answer: A

Question. Filiform apparatus is characteristic feature of
(a) Synergids
(b) Generative cell
(c) Nucellar embryo
(d) Aleurone cell

Answer: A

Question. The wheat grain has an embryo with one large shield-shaped cotyledon known as
(a) Scutellum
(b) Coleorrhiza
(c) Epiblast
(d) Coleoptile

Answer: A

Question. Which one of the following fruits is parthenocarpic?
(a) Banana
(b) Brinjal
(c) Apple
(d) Jackfruit

Answer: A

Question. In angiosperms, microsporogenesis and megasporogenesis
(a) Involve meiosis
(b) Occur in anther
(c) Occur in ovule
(d) Form gametes without further divisions

Answer: A

Question. Which one of the following statements is not true?
(a) Honey is made by bees by digesting pollen collected from flowers
(b) Pollen grains are rich in nutrients, and they are used in the form of tablets and syrups
(c) Pollen grains of some plants cause severe allergies and bronchial afflictions in some people
(d) The flowers pollinated by flies and bats secrete foul odour to attract them

Answer: A

Question. The hilum is a scar on the
(a) Seed, where funicle was attached
(b) Fruit, where style was present
(c) Seed, where micropyle was present
(d) Fruit, where it was attached to pedicel

Answer: A

Question. Which one of the following may require pollinators, but is genetically similar to autogamy?
(a) Geitonogamy
(b) Xenogamy
(c) Apogamy
(d) Cleistogamy

Answer: A

Question. Which of the following are the important floral rewards to the animal pollinators?
(a) Nectar and pollen grains
(b) Protein pellicle and stigmatic exudates
(c) Colour and large size of flower
(d) Floral fragrance and calcium crystals

Answer: A

Question. Transmission tissue is characteristic feature of
(a) Solid style
(b) Dry stigma
(c) Hollow style
(d) Wet stigma

Answer: A

Question. Geitonogamy involves
(a) Fertilization of a flower by the pollen from another flower of the same plant
(b) Fertilization of a flower by the pollen from the same flower
(c) Fertilization of a flower by the pollen from a flower of another plant in the same population
(d) Fertilization of a flower by the pollen from a flower of another plant belonging to a distant population

Answer: A

Question. Pollen tablets are available in the market for
(a) Supplementing food
(b) Ex situ conservation
(c) Breeding Equisetum
(d) In vitro fertilization

Answer: A

Question. Function of filiform apparatus is to
(a) Guide the entry of pollen tube
(b) Stimulate division of generative cell
(c) Recognize the suitable pollen at stigma
(d) Produce nectar

Answer: A

Question. Perisperm differs from endosperm in
(a) Being a diploid tissue
(b) Having no reserve food
(c) Its formation by fusion of secondary nucleus with several sperms
(d) Being a haploid tissue

Answer: A

Question. Megasporangium is equivalent to
(a) Ovule
(b) Embryo sac
(c) Nucellus
(d) Fruit

Answer: A

Question. Advantage of cleistogamy is
(a) No dependence on pollinators
(b) Higher genetic variability
(c) More vigorous offspring
(d) Vivipary

Answer: A

Question. Which one of the following statements is correct ?
(a) Tapetum nourishes the developing pollen
(b) Sporogenous tissue is haploid
(c) Endothecium produces the microspores
(d) Hard outer layer of pollen is called intine

Answer: A

Question. An organic substance that can withstand environmental extremes and cannot be degraded by any enzyme is
(a) Sporopollenin
(b) Cuticle
(c) Cellulose
(d) Lignin

Answer: A

Question. The coconut water and the edible part of coconut are equivalent to
(a) Endosperm
(b) Endocarp
(c) Embryo
(d) Mesocarp

Answer: A

Question. The gynoecium consists of many free pistils in flowers of
(a) Michelia
(b) Papaver
(c) Aloe
(d) Tomato

Answer: A