Description : Life cycle of Ectocarpus and Fucus respectively are: (1) Diplontic, Haplodiplontic (2) Haplodiplontic, Diplontic (3) Haplodiplontic, Haplontic (4) Haplontic, Diplontic
Last Answer : (2) Haplodiplontic, Diplontic
Description : Life cycles of Ectocarpus and Fucus respectively are (a) diplontic, haplodiplontic (b) haplodiplontic, diplontic (c) haplodiplontic, haplontic (d) haplontic, diplontic
Last Answer : (b) haplodiplontic, 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
Last Answer : Ans. ((d))
Description : Haploid plants can be obtained from: (a) Leaf culture (b) Bud culture (c) Root culture (d) Anther culture
Description : Haploid cells belong to: (a) Integument, pollen grain, endosperm (b) Embryo, endosperm and pollen grain (c) Megaspore, pollen grain, antipodal (d) Integument, pollen grain and antipodal
Last Answer : Ans. ((c))
Description : Endosperm in gymnosperm is............. a) haploid b)diploid c)triploid d)tetraploid
Last Answer : a) haploid
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 : 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 : Example of plants with Haplontic life cycle. -Biology
Last Answer : answer:
Description : Write a short note on Haplontic life cycle.
Last Answer : Write a short note on Haplontic life cycle.
Description : .Which one of the following has haplontic life cycle? (a) Polytrichum (b) Ustilago (c) Wheat (d) Funaria
Last Answer : (d) Funaria
Description : Which one of the following is considered important in the development of seed habit? (a) Heterospory (b) Haplontic life cycle (c) Free-living gametophyte (d) Dependent sporophyte
Last Answer : (a) Heterospory
Description : .Consider the following four statements whether they are correct or wrong. A. The sporophyte in liverworts is more elaborate than that in mosses. B. Salvinia is heterosporous. C. The life-cycle in all seed-bearing plants is diplontic ... are (a) A and C (b) A and D (c) B and C (d) A and B
Last Answer : (b) A and D
Description : Example of plants with Diplontic life cycle. -Biology
Description : Explain the term: Haplo-diplontic life cycle.
Last Answer : Explain the term: Haplo-diplontic life cycle.
Description : Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses? (a) Diplontic life cycle (b) Members of Kingdom Plantae (c) Mode of nutrition (d) Multiplication by fragmentation
Last Answer : (d) Multiplication by fragmentation
Description : 79. Which one of the following is common to multicellular fungi, filamentous algae and protonema of mosses ? (1) Multiplication by fragmentation (2) Diplontic life cycle (3) Members of kingdom Plantae (4) Mode of Nutrition
Last Answer : Multiplication by fragmentation
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 : Hormogonia are the vegetative reproductive structures of (a) Chlamydomonas (b) Spirogyra (c) Oscillatoria (d) Ulothrix
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 : Trichomes are the structures which are exclusively made up of
Last Answer : Trichomes are the structures which are exclusively made up of – Epidermis only
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 : What term is illustrated by plants that have a sporic life cycle in which both haploid and diploid forms are multicelluar?
Last Answer : I cannot answer this question.
Description : The dominant phase of life cycle in these organism is haploid? A. Mosses (Answer) B. Bacteria C. Protozoa D. None
Last Answer : A. Mosses (Answer)
Description : The living cells having thickening at the corners due to deposition of pectin are known as
Last Answer : The living cells having thickening at the corners due to deposition of pectin are known as – Collenchyma cells.
Description : Calvin cycle is: (1) C3 cycle (2) Reductive pentose-phosphate cycle (3) Common in cereals uncommon in cereals (4) Uncommon in cereals
Description : What is the significance of S-phase of cell cycle?
Last Answer : Ans: During S phase there is doubling of DNA due to semiconservative replication of DNA. The two chromatids of chromosomes are formed at the end of this stage.
Description : A polyploid having chromosome sets from different sources such as different species is known as a. Autopolyploid b. Allopolyploid c. Aneuploid d. Haploid
Last Answer : b. Allopolyploid
Description : Mark incorrect statements :- (A) Meiosis involves only a single cycle of DNA replication (B) Four haploid cells are formed at the end of meiosis-I ( C
Last Answer : Mark incorrect statements :- (A) Meiosis involves only a single cycle of DNA replication (B) Four haploid ... and C C. Only B D. All are correct
Description : In which phase of cell cycle the amout of DNA in a diploid cell become four times as compared to a haploid cell?
Last Answer : In which phase of cell cycle the amout of DNA in a diploid cell become four times as compared to a haploid cell? A. ` ... C. `G_(2)`, S & M D. `G_(@)`
Description : The study of past geological plant life is done in branch called as ….. a)Botany b)Paleobotany c)History d)Anthropology
Last Answer : b)Paleobotany
Description : Name any two plants having sensitive stigmas
Last Answer : Ans: Mimulus, Martynia
Description : A mature ligule, having prominent basal portion, is called: (a) Glossopodium (b) Rhizhore (c) Trichome (d) None of these
Last Answer : Ans. ((a))
Description : Cell ‘A’ with O.P = 10 atm and T.P =5 atm is in contact with cell ‘B’ having O.P = 15 atm and T.P = 12 atm. The flow of water will be: (a) From A to B (b) Equal flow (c) From B to A (d) No flow
Description : Aerosols having carbon and fluorine compounds are chiefly released by: (a) Refineries (b) Automobiles (c) Industries (d) Jets 3. Coir of commerce is obtained from: (a) Endocarp of coconut (b) Mesocarp of coconut (c) Stem of jute (d) Leaves of coconut
Description : Sporocarp is a reproductive structure of (a) Some algae (b) Some aquatic ferns (c) Angiosperms having spores (d) Bryophytes
Last Answer : Ans. ((b))
Description : Decot root having more than six vascular bundles are found in (a) Pea (b) Sunflower (c) Ficus (d) Ranunculus
Description : Annual rings are more prominent in trees having
Last Answer : Annual rings are more prominent in trees having – Distinct Seasonal variations
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 : 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 : What are the main morphological types for food storage ?
Last Answer : There are 3 main types of staples for food storage.
Description : How many types of cells ?
Last Answer : There are two main types of cells based on the type of nucleus. Namely: (1) stem cell. (2) The actual cell.
Description : What are the types of sprouts and what are they ?
Last Answer : There are two types of germination. Namely: mortal and mortal.
Description : What are the main types of fruits ?
Last Answer : : There are mainly three types of fruits. Simple fruits , bunch fruits and compound fruits.
Description : What are the main types of reproduction ?
Last Answer : There are mainly two types of reproduction. Namely: asexual and sexual.
Description : How many types of compound letters ?
Last Answer : 2 types of compound leaves.
Description : How many types of letters ?
Last Answer : 2 types of letters. For example: simple and compound letters.
Description : How many types of stems ?
Last Answer : 2 types of stems. For example: strong and weak stems.
Description : How many types of roots ?
Last Answer : 2 types of roots. For example: spatial and non-local roots.