Description : Study of formation, growth and development of new individual from an egg is (a) apomixis (b) embryology (c) embryogeny (d) cytology.
Last Answer : (b) embryology
Description : The development of fruit without fertilization or seed is called as: a. Pollination b. polyembryony c. pseudogamy d. Parthenocarpy
Last Answer : Parthenocarpy
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
Last Answer : Ans. ((a))
Description : What is the difference between apomixis and parthenocarpy? -Biology
Last Answer : answer:
Description : Difference between parthenocarpy and apomixis. -Biology
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 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
Last Answer : (a) nucellus or integuments
Description : Development of embryo from unfertilized egg is known as A) Parthenogenesis B) Parthenocarpy C) Apomixsis D) None of the above
Last Answer : A) 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 : Polyembryony means a. One embryo b. Two embryo c. More than two embryo d. More than three embryo
Last Answer : More than three embryo
Description : The seeds of Pinus plant show a. Polyembryony b. One embryo c. No embryo d. Redundant embryo
Last Answer : a. Polyembryony
Description : Edible Banana fruit is seedless because of — a. Embryo abortion b. Vegetative parthenocarpy c. Lack of pollination d. None of these
Last Answer : b. Vegetative parthenocarpy
Description : Seed formation without fertilisation in flowering plants involves the process of (a) somatic hybridisation (b) apomixis (c) sporulation (d) budding
Last Answer : (b) apomixis
Description : In spite of several angiospermic features Gnetum is a gymnosperm because…. a) polyembryony is a common features b) prothallial cell is present in the male gametophyte c) seed is naked d) stem exhibit anomalous secondary growth
Last Answer : c) seed is naked
Description : Are pollination and fertilization necessary in apomixis? -Biology
Description : What is apomixis in plant breeding? -Biology
Last Answer : Apomixis (asexual seed formation) is the result of a plant gaining the ability to bypass the most fundamental aspects of sexual reproduction: meiosis and fertilization. Without the need for male fertilization, the resulting seed germinates a plant that develops as a maternal clone
Description : Importance of apomixis in plant breeding? -Biology
Last Answer : Apomixis produces seed progeny that are exact replicas of the mother plant. The major advantage of apomixis over sexual reproduction is the possibility to select individuals with desirable gene combinations and to propagate them as clones.
Description : $ Asexual reproduction is also called Apomixis. ! Apogamy shortens the life cycle of a plant.
Last Answer : $ Asexual reproduction is also called Apomixis. ! Apogamy shortens the life cycle of a plant. A. If both ... is wrong D. If both As and R are wrong.
Description : Development of Sporophyte from gametophyte tissue without fusion of gametes is: (a) Apospory (b) Apogamy (c) Apomixis (d) Parthenogenesis
Last Answer : Ans. ((b))
Description : Development of saprophyte from gametophyte, is called (a) Apomixis (b) Apospory (c) Apogamy (d) Dip1ospory
Last Answer : Ans. ((c))
Description : When one plant has both male and female flowers separately, is called— (A) Monophrodits (B) Monoecious (C) Hermaphrodite (D) Apomixis
Last Answer : (B) Monoecious
Description : What is common between vegetative reproduction and apomixis? (a) Both are applicable to only dicot plants. (b) Both bypass the flowering phase. (c) Both occur round the year. (d) Both produce progeny identical to the parent.
Last Answer : (d) Both produce progeny identical to the parent
Description : WHAT IS APOMIXIS? DESCRIBE ITS IMPORTANCE?
Last Answer : ANS. IT IS THE PROCESS OF DEVELOPMENT OF SEEDS WITHOUT FERTILISATION. EXAMPLE: SOME SPECIES OF ASTERACEAE AND GRASSES. IMPORTANCE: APOMICTIC GENES CAN BE INTRDUED IN HYBRID SEED INDUSTRY.
Description : What is common between vegetative reproduction and Apomixis?a)Both are applicable to only dicot plantsb)Both bypass the flowering phasec)Both occur round the yeard)Both produces progeny identical to the paren
Last Answer : Both produces progeny identical to the parent
Description : What is polyembryony ?
Last Answer : Polyembryony is the phenomenon in which a single embryo in its initial embryonic stage divides itself forming many new individuals of the same sex and genetically identical. This is the way, for ... place in armadillos of the genus Dasypus. Polyembryony is an example of natural cloning .
Description : The best example of Polyembryony is (1) Cocoa (2) Capsicum (3) Citrus (4) Cycas
Last Answer : (3) Citrus Explanation: In citrus fruits such as oranges, the nuclear cells that surround the embryo start dividing and protrude into the embryo sac. These develop into embryos; thus resulting in the presence of more than one embryo inside each ovule. This condition is known as polyembryony.
Description : Nuceller seedlings are also called as: a. Monoembryony b. Zygotic seedling c. Polyembryony d. None of them
Last Answer : Polyembryony
Description : The polyembryony commonly occurs in (a) tomato (b) potato (c) Citrus (d) turmeric.
Last Answer : (c) Citrus
Description : Nucellar polyembryony is reported in species of (a) Citrus (b) Gossypium (c) Triticum (d) Brassica.
Last Answer : (a) Citrus
Description : Which one of the following generates new genetic combinations leading to variation? (a) Vegetative reproduction (b) Parthenogenesis (c) Sexual reproduction (d) Nucellar polyembryony
Last Answer : (c) Sexual reproduction
Description : The transfer of pollen grains from anther to stigma is called; a) Fertilization b) pollination c) Microsporogenesis d) Polyembryony
Last Answer : Ans. b) Pollination
Description : Nucellar polyembryony is reported in species of:a) Citrusb) Gossypiumc) Triticumd) Brassica
Last Answer : a) Citrus
Description : The chemicals which induce artificial polyembryony are
Last Answer : The chemicals which induce artificial polyembryony are – 2,4 D; 2,4,5, T, and NAA
Description : When polyembryony is due to activation of some sporophytic cells of ovule, it is called as
Last Answer : When polyembryony is due to activation of some sporophytic cells of ovule, it is called as – Adventive polyembryony
Last Answer : Citrus
Description : Write two precautions to be taken while identifying different parts of an embryo of a dicot seed. -Science
Last Answer : (i) The slide should be properly focused. (ii) Slide should be observed first under low-power magnification and then under high-power magnification of the compound microscope.
Description : why the seed has an embryo and not zygote? -Biology
Description : What precautions will you take while doing the study of different parts of an embryo of a dicot seed?
Last Answer : What precautions will you take while doing the study of different parts of an embryo of a dicot seed?
Description : What does embryo the cotyledon and the seed coat do?
Last Answer : Feel Free to Answer
Description : The emergence and development of seedlings from the seed-embryo under favourable condition
Last Answer : Ans. Germination
Description : A fertilized ovule consisting of intact embryo, stored food and seed-coat which is viable and has got the capacity to germinate
Last Answer : Ans. Seed
Description : Polyploidy level in embryo and endosperm of seed
Last Answer : Ans. 3n
Description : Maize grain is (a) A seed (b) An embryo (c) An ovule (d) A fruit
Last Answer : Ans:(d)
Description : Dormancy of seed is a biological mechanisms that provides protection against ______: a. Seed spoilage b. Embryo abortion c. Pre mature germination d. Dehydration
Last Answer : Pre mature germination
Description : The nutritive tissue around the embryo in seed is a. Endosmosis b. Endodermis c. Endosperm d. Embryo-sac
Last Answer : Endosperm
Description : Ripened ovary is called as: a. Flower b. Seed c. Fruit d. Embryo
Last Answer : Fruit
Description : Salient factors which contribute to the fruit drop are: a. Embryo abortion b. Seed number of fruit c. Moisture supply d. All of the above
Last Answer : All of the above
Description : Coconut water from a tender coconut is (a) innermost layers of the seed coat (b) degenerated nucellus (c) immature embryo (d) free nuclear endosperm
Last Answer : (d) free nuclear endosperm.
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).