Here, you will get Class 12 Biology MCQ of Chapter 2 Sexual Reproduction In Flowering Plants for cracking NEET/AIIMS. By solving these MCQs of Class 12 Biology Chapter 2 Sexual Reproduction In Flowering Plants, you will get the confidence to crack NEET. Practice MCQ Questions for Class 12 Biology with Answers on a daily basis and score well in exams.
Sexual Reproduction In Flowering Plants Class 12 MCQs Questions with Answers
The female gametophyte of a typical dicot at the time of fertilisation is
(a) 8 – celled
(b) 7 – celled
(c) 6 – celled
(d) 5 – celled
Answer: (b) 7 – celled
Both chasmogamous and cleistogamous flowers are present in
(a) Helianthus
(b) Commelina
(c) Rosa
(d) Gossypium
Answer: (b) Commelina
Male and female flowers are present on different plants (dioecious) to ensure xenogamy, in
(a) papaya
(b) bottle gourd
(c) maize
(d) all of these
Answer: (a) papaya
Plants with ovaries having only one or a few ovules are generally pollinated by
(a) bees
(b) butterflies
(c) birds
(d) wind
Answer: (d) wind
Spiny or sticky pollen grains and large, attractively coloured flowers are associated with
(a) hydrophily
(b) entomophily
(c) ornithophily
(d) anemophily
Answer: (b) entomophily
In albuminous seeds, food is stored in _______ and in non albuminous seeds, it is stored in _______
(a) endosperm, cotyledons
(b) cotyledons, endosperm
(c) nucellus, cotyledons
(d) endosperm, radicle
Answer: (a) endosperm, cotyledons
Which structure is not found in Angiosperm?
(a) Archegonium
(b) Carpel
(c) Anther
(d) Magagametophyte
Answer: (a) Archegonium
Who proved that the cells are totipotent?
(a) White
(b) Skoog
(c) Miller
(d) Steward
Answer: (d) Steward
Father of lndian Angiosperm Embnology is
(a) B. M. John
(b) B. G L. Swami
(c) R.N. Kapil
(d) P. Maheshwari
Answer: (d) P. Maheshwari
How many meiotic divisions are necessary to produce 100 pollen grains ?
(a) 100
(b) 50
(c) 25
(d) 20
Answer: (c) 25
In a type of apomixis known as adventive embryony, embryos develop directly from the
(a) Nucellus or integuments
(b) Zygote
(c) Synergids or antipodals in an embryo sac
(d) Accessory embryo sacs in the ovule
Answer: (a) Nucellus or integuments
Development of fruit without fertilizations is
(a) Parthenogenesis
(b) Heterostyly
(c) Parthenocarpy
(d) Agamospermy
Answer: (c) Parthenocarpy
The pollen tube usually enters the embryosac
(a) Through one of the synergids
(b) By directly penetrating the egg
(c) Between one synergid and central cell
(d) By Jtnocking off the antipodal cells
Answer: (a) Through one of the synergids
Fertilization is depicted by the condition
(a) N → 2N
(b) 2N → N
(c) 2N → 4N
(d) 4N → 2N
Answer: (a) N → 2N
Vegetative propagation by bulbils occur in
(a) Agave
(b) Gingiber
(c) Vallisneria
(d) Curcuma
Answer: (a) Agave
Polyembryony commonly occurs in
(a) banana
(b) tomato
(c) potato
(d) citrus
Answer: (d) citrus
The outermost and innermost wall layers of microsporangium in an anther are respectively
(a) endothecium and tapetum
(b) epidermis and endodermis
(c) epidermis and middle layer
(d) epidermis and tapetum
Answer: (d) epidermis and tapetum
Science of cultivation, breeding, marketing and arrangement of flowers is called
(a) arboriculture
(b) floriculture
(c) horticulture
(d) anthology
Answer: (b) floriculture
Study of pollen grains is called
(a) micrology
(b) anthology
(c) palynology
(d) pomology
Answer: (c) palynology
Stalk of ovule is called
(a) Funicle
(b) Caruncle
(c) Nucellus
(d) Pedicel
Answer: (a) Funicle
In angiosperms all the four microspores of tetrad are covered by a layer which is formed by
(a) Pectocellulose
(b) Callose
(c) Cellullose
(d) Sporopollenin
Answer: (b) Callose
When pollen tube enter into the nucellus through micropyle is called
(a) Porogamy
(b) Xenogamy
(c) Mesogamy
(d) Dikogamy
Answer: (a) Porogamy
The sexual reproduction in plants was first reported by
(a) Nawaschin
(b) Camererius
(c) Hanstein
(d) Amici
Answer: (b) Camererius
Milky water of tender coconut is
(a) Liquid gametes
(b) Liquid nucellus
(c) Liquid female gametophyte
(d) Liquid endosperm
Answer: (d) Liquid endosperm
In which one pair both the plants can be vegetatively propagated by leaf segments?
(a) Agave and Kalanchoe
(b) Bryophyllum and Kalanchoe
(c) Asparagus and Bryophyllum
(d) Chrysanthemum and Agave
Answer: (b) Bryophyllum and Kalanchoe
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