Description : n Pinus/gymnosperms, the haploid structure are (a) megaspore, endosperm and embryo (b) megaspore, pollen grain and endosperm (c) megaspore, integument and root (d) pollen grain, leaf and root.
Last Answer : (b) megaspore, pollen grain and endosperm
Description : Which of the following pair have haploid structures? (a) Nucellus and antipodal cells (b) Antipodal cells and egg cell (c) Antipodal cells and megaspore mother cell (d) Nucellus and primary endosperm nucleus
Last Answer : (b) Antipodal cells and egg cell
Description : In a cell haploid chromosome number is 15. What number is found in Pollen grain, Zygote, Primary endosperm nucleus and Colchicine treated zygote.
Last Answer : Ans: 15 in pollen grain, 30 in zygote, 45 in Primary Endosperm nucleus and 60 in colchicine treated zygote.
Description : Which one of the following pairs of plant structures has haploid number of chromosomes? (a) Nucellus and antipodal cells (b) Egg nucleus and secondary nucleus (c) Megaspore mother cell and antipodal cells (d) Egg cell and antipodal cells
Last Answer : d) Egg cell and antipodal cells
Description : In angiosperms, functional megaspore develops into (a) embryo sac (b) ovule (c) endosperm (d) pollen sac.
Last Answer : a) embryo sac
Description : In majority of angiosperms, (a) egg has a filiform apparatus (b) there are numerous antipodal cells (c) reduction division occurs in the megaspore mother cells (d) a small central cell is present in that embryo sac.
Last Answer : (c) reduction division occurs in the megaspore mother cells
Description : In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf
Last Answer : Ans. ((c))
Description : The ovule in which embryo sac become horse shoe shaped in: (a) Amphitropous (b) Camphylotropous (c) Orthotropous (d) Anatropous Ans. (a) .................................. ... TEST SAMPLE QUESTIONS 1. Caruncle develops-from: (a) Outer integument (b) Ctyledon (c) Funiculus (d) Inner integuments
Last Answer : Ans. ((a))
Description : Endosperm in gymnosperm is............. a) haploid b)diploid c)triploid d)tetraploid
Last Answer : a) haploid
Description : Embryo sac represents: (a) Megaspore (b) Megagamete (c) Megasporophyll (d) megagametophyte
Last Answer : Ans. ((d))
Description : Functional megaspore in an angiosperm develops into ? (1) Endosperm (2) Embryo sac (3) Embryo (4) Ovule
Last Answer : (2) Embryo sac
Description : To obtain haploid plants, we culture _________ e. Entire anther f. Nucleus g. Embryo h. Apical bud
Last Answer : e. Entire anther
Description : When the embryo develops from haploid egg cell without fertilization, the phenomenon is called as
Last Answer : When the embryo develops from haploid egg cell without fertilization, the phenomenon is called as – Haploid parthenogenesis
Description : With reference to plant tissue culture select the matching pair: (1) Sterile triploid—banana and seedless fruit (2) Somaclonal variations—differences appearing (3) Embryoids—non-zygatic embryo produced from somatic cells (4) Pulses—belong to cruciferae
Description : Vegetative propagation is Pistiaoccurs bya) StIn angiosperms, functional megaspore develops into:a) Embryo sacb) Ovulec) Endospermd) Pollen sacolenb) Offsetc) Runnerd) Sucker
Last Answer : Embryo sac
Description : .In Pinus, the pollen grain has 6 chromosomes then in its endosperm will have (a) 12 (b) 18 (c) 6 (d) 24.
Last Answer : (c) 6
Description : In angiosperms, pollen tube liberate their male gametes into the (a) central cell (b) antipodal cells (c) egg cell (d) synergids.
Last Answer : d) synergids.
Description : Formation of diploid embryosac from diploid vegetative structure, e.g., nucellus or integument etc., without meiosis is called: (a) Apospory (b) Apomixis (c) Diplospory (d) Adventives polyembryony
Description : Point out the odd one. (a) Nucellus (b) Embryo sac (c) Micropyle (d) Pollen grain
Last Answer : (d) Pollen grain
Description : The plant parts which consist of two generations- one within the other (1) pollen grains inside the anther (2) germinated pollen grain with two male gametes (3) seed inside the fruit (4) embryo sac inside the ovule (a) (1) only (b) (1), (2), and (3) (c) (3) and (4)
Last Answer : (d) (1) and (4).
Description : When a diploid embryosac is formed from a megaspore mother cell without meiosis, it is called as
Last Answer : When a diploid embryosac is formed from a megaspore mother cell without meiosis, it is called as – Diplospory
Description : Callus is a. Tissue that forms embryo b. An insoluble carbohydrate c. Tissue that grows to form embryoid d. Unorganized actively dividing mass of cells maintained in cultured
Last Answer : d. Unorganized actively dividing mass of cells maintained in cultured
Description : When embryo arises directly from the (2n) sporophytic cells like nucellus or integuments it is called as
Last Answer : When embryo arises directly from the (2n) sporophytic cells like nucellus or integuments it is called as – Adventive embryony
Description : The seeds which have separate endosperm: (1) Maize (2) Onion (3) Rice (4) Bean
Description : Coir is the commercial product of coconuts: (a) Mesocarp (b) Pericarp (c) Endocarp (d) Endosperm
Description : If there are 16 chromosomes in the cell of an angiospermic plant, how many chromosomes are there in the perisperm and endosperm cell
Last Answer : Ans: 16 in perisperm as it is diploid and 24 in endosperm as it is triploid
Description : Haploid plants can be obtained from: (a) Leaf culture (b) Bud culture (c) Root culture (d) Anther culture
Description : A plant having two types of haploid structures in its life cycle is known as: (a) Haplobiontic (b) Diplobiontic (c) Haplontic (d) Diplontic
Description : In angiosperms regarding development of microgametophyte each microspore mother cell undergoes (a) Mitosis to produce 4 microspores (b) Two successive mitosis to form 4 microspores (c) Two successive meiotic division to form 4 microspores (d) Meiosis to produce 4 haploid microspores
Description : 102.Perisperm differs from endosperm in (a) being a diploid tissue (b) its formation by fusion of secondary nucleus with several sperms (c) being a haploid tissue (d) having no reserve food.
Last Answer : (a) being a diploid tissue
Description : .In Pinus/Cycas/gymnosperms, the endosperm is (a) triploid (b) haploid (c) diploid (d) tetraploid.
Last Answer : (b) haploid
Description : .The endosperm of gymnosperm is (a) diploid (b) polyploid (c) triploid (d) haploid.
Last Answer : (d) haploid.
Description : Which one is a wrong statement? (a) Haploid endosperm is typical feature of Gymnosperms. (b) Brown algae have chlorophyll a and c and fucoxanthin. (c) Archegonia are found in Bryophyta, Pteridophyta and Gymnosperms. (d) Mucor has biflagellate zoospores
Last Answer : (d) Mucor has biflagellate zoospores
Description : 2. Perisperm and endosperm differ in a. Being a diploid tissue b. Being a haploid tissue c. Having no reserve food d. Formation of perisperm by fusion of the secondary nucleus with many sperms
Last Answer : d. Formation of perisperm by fusion of the secondary nucleus with many sperms
Description : Perisperm differs from endosperm in :a)Being a diploid tissueb)Its formation by fusion of secondary nucleus with several sperms c)Being a haploid tissued)Having no reserve food
Last Answer : 3Being a diploid tissue
Description : Female gametophyte of angiosperms is represented by (a) ovule (b) megaspore mother cell (c) embryo sac (d) nucellus.
Last Answer : (c) embryo sac
Description : Embryo sac represents (a) megaspore (b) megagametophyte (c) megasporophyll (d) megagamete.
Last Answer : b) megagametophyte
Description : Microsporogenesis is the formation of : a) Microspore b) Megaspore c) Egg d) Embryo sac
Last Answer : Ans : a) Microspore
Description : What Differ between cheek cells and pollen grain?
Last Answer : Need answer
Description : Name two cells of a mature pollen grain?
Last Answer : Ans: Vegetative cell and Generative cell
Description : Explain "Shimal Animal Pollen Flower" ?
Last Answer : Animal flowers are usually fairly large. However, even though it is small, the flowers are decorated with inflorescences. Their colors are attractive. All these flowers may or may not have an odor. As these features are present in Shimul flower, Shimul flower is also an animal flower.
Description : The process involving emasculation of the flower before anthesis and depositing pollen grains on the cut end of the ovary is called as
Last Answer : The process involving emasculation of the flower before anthesis and depositing pollen grains on the cut end of the ovary is called as – Intra-ovarian pollination
Description : When embryosac receives two or more than two pollen tubes the sperm nucleus fusing with the egg nucleus may be derived from one pollen tube and one fusing with the polar nuclei may be derived from other pollen tube, the phenomenon is termed as
Last Answer : When embryosac receives two or more than two pollen tubes the sperm nucleus fusing with the egg nucleus may be derived from one pollen tube and one fusing with the polar nuclei may be derived from other pollen tube, the phenomenon is termed as – Heterofertilization
Description : Effect of pollen grains on the properties of endosperms is called as
Last Answer : Effect of pollen grains on the properties of endosperms is called as – Xenia
Description : Very long pollen with needle shaped structures are found in
Last Answer : Very long pollen with needle shaped structures are found in – Zostera
Description : Before, germination of pollen, the moisture necessary for pollen hydration is provided by
Last Answer : Before, germination of pollen, the moisture necessary for pollen hydration is provided by – Stigma
Description : In Angiosperms, during pollination, the pollen grains are mostly
Last Answer : In Angiosperms, during pollination, the pollen grains are mostly – Bicellular
Description : Formation of 8-nucleate embryosac by pollen grains is also called as
Last Answer : Formation of 8-nucleate embryosac by pollen grains is also called as – Nemec phenomenon
Description : Pollen embryoids were first developed by
Last Answer : Pollen embryoids were first developed by – Guha and Maheshwari
Description : Pollen grains of angiosperms are
Last Answer : Pollen grains of angiosperms are – Partially developed male gametophyte