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 : 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 : $ Double fertilization and triple fusion occurs in Angiosperms. ! Triple fusion produces triploid type of endosperm.
Last Answer : $ Double fertilization and triple fusion occurs in Angiosperms. ! Triple fusion produces triploid type of endosperm ... D. If both As and R are wrong.
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 : Bacteria was first discovered by (1) A.V. Leeuwenhoek (2) Robert Hooke (3) Robert Koch (4) Louis Pasteur
Last Answer : A.V. Leeuwenhoek
Description : Ringing experiment was first performed by: a. Godlewski b. Strasburger c. Hartig d. J.C.Bose
Last Answer : c. Hartig
Description : What is triple fusion in flowering plants? -Biology
Last Answer : answer:
Description : Difference between syngamy and triple fusion -Biology
Description : What is triple fusion? -Biology
Description : In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf
Last Answer : Ans. ((c))
Description : What is triple fusion? Name the nuclei involved in triple fusion.
Last Answer : Ans: Fusion of male gamete with diploid secondary nucleus to form triploid primary endosperm nucleus is known as triple fusion. In triple fusion two polar nuclei and one male gamete are involved.
Description : Differentiate between ‘self-pollination’ and ‘cross-pollination’. Describe double fertilisation in plants. -Science
Description : Double fertilisation is characteristic of (a) angiosperms (b) anatropous (c) gymnosperms (d) bryophytes.
Last Answer : (a) angiosperms
Description : The role of double fertilisation in angiosperms is to produce (a) cotyledons (b) endocarp (c) endosperm (d) integuments.
Last Answer : (c) endosperm
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 : Which one of the following statements is wrong? (a) When pollen is shed at two-celled stage, double fertilisation does not take place. (b) Vegetative cell is larger than generative cell. (c) Pollen grains in some plants remain viable for months. (d) Intine is made up of cellulose and pectin.
Last Answer : (a) When pollen is shed at two-celled stage, double fertilisation does not take place.
Description : Double fertilisation is exhibited by (a) algae (b) fungi (c) angiosperms (d) gymnosperms.
Last Answer : c) angiosperms
Description : Which of the following is without exception in angiosperms? (a) Presence of vessels (b) Double fertilisation (c) Secondary growth (d) Autotrophic nutrition
Last Answer : (b) Double fertilisation
Description : WHY IS THE PROCESS OF FERTILISATION IN A FLOWERING PLANT REFFERED TO AS DOUBLE FERTILISATION ?
Last Answer : ANS. DOUBLE FERTILISATION= SYNGAMY + TRIPLE FUSION SYNGAMY= ONE MALE GAMETE + EGG--- ZYGOTE(n) TRIPLE FUSION= ANOTHER MALE GAMETE+ POLAR NUCLEI-PRIMARY ENOSPERM NUCLEUS(3n)
Description : Can be single double or triple. Move to the net?
Last Answer : Need answer
Description : Where can i buy a charger for double and triple A batteries?
Last Answer : if you have a local Walmart or sams club they sell them for a decent price if not you can try best buy they too also aslo sell many things for charging batteries such as car cables.
Description : What is a triple double in basketball?
Last Answer : It's not a double-triple, it's a triple-double. 10 in three stats-points, assists, rebounds etc.
Description : Compounds of carbon having double or triple bonds between their carbon atoms are called (1) Saturated compounds (2) Unsaturated compounds (3) Reactive compounds (4) None of the above
Last Answer : (2) Unsaturated compounds Explanation: Compounds of carbon, which are linked by only single bonds between the carbon atoms are called saturated compounds. Compounds of carbon having double or triple bonds between their carbon atoms are called unsaturated compounds.
Description : If a trolley collides with a stationary trolley of double mass, then they move off with A. half of the original velocity B. one third of original velocity C. double the original velocity D. triple the original velocity
Last Answer : one third of original velocity
Description : Classify the following compounds containing double bond and triple bond – Ethyne, benzene, Butyne, pentene
Last Answer : Double bond: Benzene, pentene Triple bond: Ethyne, Butyne
Description : If we double the temperature of an ideal gas, then it's average kinetic energy will be A. halved B. triple the original C. fourth times of original D. doubled
Last Answer : doubled
Description : A node having twice the frequency of the fundamental is called A. half harmonic B. harmonic C. double harmonic D. triple harmonic
Last Answer : harmonic
Description : A DNA with unequal nitrogen bases would most probably be (a) single stranded (b) double stranded (c) triple stranded (d) four stranded
Last Answer : (a) single stranded
Description : An organizational structure designed to overcome the problems of individual sales organizations is called 1. Hybrid sales organization 2. Double sales organization 3. Triple sales organization 4. All of the above 5. None of these
Last Answer : Hybrid sales organization
Description : Holding time for flow reactors is __________ the space time, for constant fluid density (A) Double (B) Triple (C) Equal to (D) None of these
Last Answer : (C) Equal to
Description : The carbon-carbon bond lengths in rank of increasing bond length is : (a) triple, double, single (b) single, double, triple (c) single, triple, double (d) triple, single, double
Last Answer : triple, double, single
Description : Catenation is a property of the carbon atom which describes its ability to (a) bond with other carbon atoms (b) form double and triple bonds (c) exist in plant and animal form (d) form bonds in its ground state
Last Answer : bond with other carbon atoms
Description : Equal sharing of electrons is called _____. a. ionic bonds b. covalent bonds bonds c. double bonds d. triple bonds
Last Answer : b. covalent bonds bonds
Description : harrow consist of two gangs placed end to end. A) Single action disc harrow B) Double action disc harrow C) Triple action disc harrow D) None above
Last Answer : Single action disc harrow
Description : Power miller may be called a walking type tractor. A. Double axle C. Single axle B. Triple axle D. None of the above
Last Answer : Single axle
Description : You wish to purchase a dental X ray machine and have the choice between 60kVp and 70kVp machines. With single change from 60kVp to 70kVp what would the approximate affects on exposure time?CHECK A. No effect B. Half the time C. Double D. Quarter E. Triple the time
Last Answer : B. Half the time
Description : A UNIX file system has 1 KB block size and 4-byte disk addresses. What is the maximum file size if the inode contains ten direct block entries, one single indirect block entry, one double indirect block entry and one triple indirect block entry? (A) 30 GB (B) 64 GB (C) 16 GB (D) 1 GB
Last Answer : (C) 16 GB
Description : A unix file system has 1-KB blocks and 4-byte disk addresses. What is the maximum file size if i-nodes contain 10 direct entries and one single, double and triple indirect entry each? (A) 32 GB (B) 64 GB (C) 16 GB (D) 1 GB
Description : Growing more than one crop on a piece of land during the year is known as (1) Uni cropping (2) Multiple cropping (3) Double cropping (4) Triple cropping
Last Answer : Multiple cropping
Description : Did Anton van leeuwenhoek receive a noble peace prize?
Last Answer : What is the answer ?
Description : What is ithe limitation of leeuwenhoek microscope?
Description : What did Leeuwenhoek and Hooke observe in the microscope?
Last Answer : Born in Delft in The Netherlands in 1632 and died in 1723.
Description : What was the source of the microscopic "animalcules" described by Leeuwenhoek?
Last Answer : pond water
Description : Who is commonly known as "the Father of Microbiology"? (1) Robert Hooke (2) Antonie Philips van Leeuwenhoek (3) Carl Linnaeus (4) Charles Darwin
Last Answer : (2) Antonie Philips van Leeuwenhoek Explanation: Antonie Phillips van Leewenhoek circa1759 is known as the father of microbiology and the microscope due to his early study of bacteria.
Description : Cellular totipotency was demonstrated by (a) Theodore Schwann (b) A.V. Leeuwenhoek (c) F.C. Steward (d) Robert Hooke.
Last Answer : (c) F.C. Steward
Description : Who has first time seen the micro-organism? a) Robert Koch b) John Tyndall c) Antonie van Leeuwenhoek d) Louis Pasteur
Last Answer : d) Louis Pasteur
Description : The five kingdom classification was proposed in 1969 by — a. R. H. Whittaker b. Haeckel c. Robert Hooke d. Leeuwenhoek
Last Answer : a. R. H. Whittaker
Description : The idea of selective toxicity was first proposed by A- Antony van Leeuwenhoek B- Paul Ehrlich C- Louis Pasteur D- Alexander Fleming
Last Answer : Paul Ehrlich