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Which of the following plants shows one of the longest haploid life spans?
(a) Jatropha
(b) Pinus
(c) Solanum (wheat)
(d) Lilium -
Nucellar embryos are of no use in
(a) Mango
(b) Citrus
(c) Grapes
(d) Orange -
Pollen grain is related to the embryo sac and sperm is to the
(a) Egg
(b) Male gametophyte
(c) Female gametophyte
(d) Zygote -
Which one of the following is diploid tissue?
(a) Endosperm of wheat
(b) Pollen grain
(c) Embryo
(d) Egg -
256 microspores shall be formed as result of reduction division in
(a) 64 microspore mother cells
(b) 32 microspore mother cells
(c) 16 microspore mother cells
(d) 8 microspore mother cells -
If rye plant has 14 chromosomes, its most likely haploid cell will have
(a) 7 chromosomes
(b) 14 chromosomes
(c) 21 chromosomes
(d) 28 chromosomes -
Pollen grain is considered to be one of the following
(a) Female gametophyte
(b) Microspore
(c) Male gametophyte
(d) Nurse tissue -
Pollen embryoids were discovered by
(a) Haberlandt
(b) Steward
(c) Vasil and Nitsch
(d) Kornar and Natarajan -
Egg and antipodal nuclei are formed by
(a) Cytokinesis
(b) Karyokinesis
(c) Meiosis
(d) Syngamy -
Male gametophyte is to the female gametophyte as pollen is to the
(a) Egg
(b) Ovule
(c) Zygote
(d) Embryo -
Cellular totipotency was for the first time demonstrated by
(a) Steward
(b) Kornar and Natarajan
(c) Vasil and White
(d) Maheshwari -
In which of the following animals embryo is dispersed in the seed at the time of dispersal?
(a) Ginkgo biloba
(b) Trigonella foenum-graecum
(c) Pinus
(d) Cycas -
Double fertilization is characteristic of
(a) Cycas
(b) Pinus
(c) Ficus
(d) Oenothera -
Nurse tissue technique was developed by
(a) White
(b) Nutt
(c) Maheshwari
(d) Nitsch -
Gametes will have 4 chromosomes if zygote will have
(a) 12 chromosomes
(b) 16 chromosomes
(c) 8 chromosomes
(d) 4 chromosomes
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