Description : Select the wrong statement. (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile. (b) Chlamydomonas exhibits both isogamy and anisogamy and ... in structure, function and behaviour. (d) Anisogametes differ either in structure, function or behaviour.
Last Answer : (a) In oomycetes, female gamete is smaller and motile, while male gamete is larger and non- motile.
Description : A sexual cell in plants is called a. Gamete b. Gametophyte c. Gamopetalous d. Gamosepalous
Last Answer : Gamete
Description : Monoecious plants have male and female sexes/flowers on a. Same plant b. Different plants c. Both of these d. None of these
Last Answer : Same plant
Description : In tobacco plant, the male gametes have twenty four chromosomes. What is the number of chromosomes in the female gamete? What is the number of chromosomes in the zygote? -Biology
Last Answer : The number of chromosome in the female gamete would be same as that in the male gamete, i.e., it will have 24 chromosomes. The number of chromosome in the zygote would be double the number present in the gamete and hence, it would be 48.
Description : Synapsis occurs between (a) mRNA and ribosomes (b) spindle fibres and centromere (c) two homologous chromosomes (d) a male and a female gamete.
Last Answer : (c) two homologous chromosomes
Description : How many meiotic divisions are required during the formation of 500 zzygotes, if in males one meiotic division result in formation of four male gamete
Last Answer : How many meiotic divisions are required during the formation of 500 zzygotes, if in males one meiotic division ... A. 625 B. 500 C. 1000 D. 2500
Description : Microsporogenesis is the formation of : a) Microspore b) Megaspore c) Egg d) Embryo sac
Last Answer : Ans : a) Microspore
Description : For good pollination in papaya orchard it is necessary that male plants should be a. 5-10% b. 40-45% c. 50-55% d. 70-75%
Last Answer : 5-10%
Description : The stamens are the male organs of flower which are also called a. Pistil b. Gynoecium c. Androecium d. Carpel
Last Answer : Androecium
Description : Different mango varieties can be distinguished on the basis of: a. New leaf colour b. Panicle length c. Number of male flowers d. All of above
Last Answer : New leaf colour
Description : Male inflorescence of Cashew nut and Walnut is called a. Catkins b. Rachis c. Cyme d. None
Last Answer : Catkins
Description : Male sterility promotes: a. Autogamy b. Allogamy c. Homogamy d. Chasmogamy
Last Answer : Chasmogamy
Description : Lower temperature than normal convert male flowers into perfect flowers in ________: a. Date palm b. Mango c. Papaya d. Citrus
Last Answer : Papaya
Description : Male sterily is not due to a. Genetic factor b. Genome factor c. Cytogenetic factor d. Nutritional factor
Last Answer : Nutritional factor
Description : In a flowering plant male gamete is formed inside _____ -Science-7
Last Answer : In a flowering plant male gamete is formed inside anther.
Description : The male gamete producing structure of bryophyte is
Last Answer : antheridia.
Description : In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation? (a) Gamete Intracytoplasmic Fallopian Transfer (b) Artificial Insemination (c) Intracytoplasmic sperm injection (d) Intrauterine transfer
Last Answer : (b) Artificial Insemination
Description : Double fertilisation is fusion of (a) two eggs (b) two eggs and polar nuclei with pollen nuclei (c) one male gamete with egg and other with synergid (d) one male gamete with egg and other with secondary nucleus.
Last Answer : (d) one male gamete with egg and other with secondary nucleus.
Description : Endosperm is formed during the double fertilisation by (a) two polar nuclei and one male gamete (b) one polar nuclei and one male gamete (c) ovum and male gamete (d) two polar nuclei and two male gametes.
Last Answer : (a) two polar nuclei and one male gamete
Description : Double fertilisation is (a) fusion of two male gametes of a pollen tube with two different eggs (b) fusion of one male gamete with two polar nuclei (c) fusion of two male gametes with one egg (d) syngamy and triple fusion.
Last Answer : (d) syngamy and triple fusion.
Description : Which one of the following is surrounded by a callose wall? (a) Male gamete (b) Egg (c) Pollen grain (d) Microspore mother cell
Last Answer : (d) Microspore mother cell
Description : In case of a couple where the male is having a very low sperm count, which technique will be suitable for fertilisation ? (1) Gamete intracytoplasmic fallopian transfer (2) Artificial Insemination (3) Intracytoplasmic sperm injection (4) Intrauterine transfer
Last Answer : (2) Artificial Insemination
Description : Double fertilization is (1) Fusion of two male gametes of a pollen tube with two different eggs (2) Fusion of one male gamete with two polar nuclei (3) Fusion of two male gametes with one egg (4) Syngamy and triple fusion
Last Answer : (4) Syngamy and triple fusion
Description : For hybrid seed production _______ flowers are completely suppressed on female plants. a. Staminate b. Pistillate c. Staminode d. Alternat
Last Answer : Staminate
Description : Callus is a term usually referring to: a. The tissue on the collar of a limb b. The first tissue develops on a cut surface just before the root formation iniates. c. Deformed growth on plant limbs d. A disease of plant leaves and limbs
Last Answer : The first tissue develops on a cut surface just before the root formation iniates
Description : The basic underlying principle of using a mist propagation system is that it: a. Keeps the propagation medium uniformly moist and supplies moisture to the base of the cuttings b. ... medium to promote root formation and development d. Increases humidity around the cutting and reduces transpiration
Last Answer : Increases humidity around the cutting and reduces transpiration
Description : Root formation is promoted in softwood cuttings under light intensity of __________ foot candles: a. 100-150 b. 150-200 c. 200-250 d. 250-350
Last Answer : 150-200
Description : Chlorophyll formation takes place within a light wavelength of _________: a. 150-200 b. 200-300 c. 300-675 d. 700-900
Last Answer : 300-675
Description : The phase of fruit bud formation continues until _________: a. Anthesis b. Petal formation c. Pollination d. Differentiation
Last Answer : Anthesis
Description : Pruning in old fruit trees increases fruit bud formation by increasing ______: a. Carbohydrates b. New vegetative growth c. Hormonal contents d. Cell sap
Last Answer : New vegetative growth
Description : Factors involved in the formation of auxins are: a. Age of apex b. Light c. Zinc d. All of the above
Last Answer : All of the above
Description : In green plants light favour the formation of a. Auxin b. GA c. ABA d. IBA
Last Answer : Auxin
Description : Optimum temperature for potato tuber formation is a. 20-22°C b. 25-30°C c. 22-25°C d. All of these
Last Answer : 20-22°C
Description : During seed formation, a sear left by the funiculus is termed as a. Hilum b. Funiculus c. Operculum d. Raph
Last Answer : Operculum
Description : In seed formation the inner integument remains thin and develops into: a. Testa f. Tegmen b. Aril c. Hilum
Last Answer : Tegmen
Description : The process of releasing the ripe female gamete from the ovary is called
Last Answer : The process of releasing the ripe female gamete from the ovary is called A. Ovulation B. Parturition C. Implantation D. Fertilisation
Description : The female gamete producing structure of bryophyte is
Last Answer : archegonia.
Description : Development of an organism from female gamete/ egg without involving fertilization is (a) adventitive embryony (b) polyembryony (c) parthenocarpy (d) parthenogenesis.
Last Answer : (d) parthenogenesis.
Description : In some plants, the female gamete develops into embryo without fertilisation. This phenomenon is known as (a) parthenogenesis (b) autogamy (c) parthenocarpy (d) syngamy.
Last Answer : (a) parthenogenesis
Description : NAME THE PHENOMENON AND ONE BIRD WHERE THE FEMALE GAMETE DIRECTLY DEVELOPS INTO A NEW ORGANISM.
Last Answer : ANS. PARTHENOGENESIS, TURKEY.
Description : During gamete formation, the enzyme recombinate participates during
Last Answer : During gamete formation, the enzyme recombinate participates during A. Prophase-I B. Prophase-II C. Metaphase-I D. Anaphase-II
Description : What did flipping the coin during gamete formation simulate?
Last Answer : Need answer
Description : During gamete formation, the enzyme recombinase participates during (a) metaphase I (b) anaphase II (c) prophase I (d) prophase II
Last Answer : (c) prophase I
Description : In ferns, meiosis takes place at the time of (a) spore formation (b) spore germination (c) gamete formation (d) antheridia and archegonia formation.
Last Answer : (a) spore formation
Description : In Ulothrix/Spirogyra, reduction division (meiosis) occurs at the time of (a) gamete formation (b) zoospore formation (c) zygospore germination (d) vegetative reproduction.
Last Answer : (c) zygospore germination
Description : During gamete formation, the enzyme recombinase participates during (1) Prophase-II (2) Metaphase-I (3) Anaphase-II (4) Prophase-I
Last Answer : (4) Prophase-I
Description : What principle states that during gamete formation genes for different traits separate without influencing each other’s inheritance? a. principle of dominance b. principle of independent assortment c. principle of probabilities d. principle of segregation
Last Answer : b. principle of independent assortment
Description : Gregor Mendel used pea plants to study a. flowering. b. gamete formation. c. the inheritance of traits. d. cross-pollination.
Last Answer : c. the inheritance of traits.
Description : n angiosperms, microsporogenesis and megasporo -genesis (a) involve meiosis (b) occur in ovule (c) occur in anther (d) form gametes without further divisions.
Last Answer : (a) involve meiosis
Description : Explain the process of microsporogenesis in angiosperm.
Last Answer : Ans: The process of formation of haploid microspores from a pollen mother cell (PMC) or microspore mother cell through meiosis is called Microsporogenesis. When the anther develops, each ... anther matures and dehydrates, the microspores dissociate from each other and develop into pollen grains.