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 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 : Statement-1 : Energy is released in the nuclear fusion of hydrogen nuclei to form helium nuclei Because Statement-2 : Binding energy per nucleon of he
Last Answer : Statement-1 : Energy is released in the nuclear fusion of hydrogen nuclei to form helium nuclei Because ... Statement-2 is false, statement-2 is true
Description : (3) two light nuclei combine to form a heavy nucleus Explanation: Nuclear fusion is the process of making a single heavy nucleus (part of an atom) from two lighter nuclei. The difference in mass ... . Fusion is the process that powers active or "main sequence" stars, or other high magnitude stars.
Last Answer : Helium is added to the oxygen supply of deep sea divers because it is - (1) less poisonous than nitrogen (2) (2) Lighter than nitrogen (3) Readily miscible with oxygen (4) less soluble in blood than nitrogen at high pressure
Description : The nuclear reaction in which a heavy nucleus splits into two nuclei of nearly equal mass is called - (1) Nuclear fusion (2) Nuclear fission (3) Nuclear reaction (4) Fast breeding
Last Answer : (2) Nuclear fission Explanation: Nuclear fission is a process used to create energy. It is when an atom splits apart into smaller atoms. The process gives off a lot of energy, and is used in nuclear weapons and nuclear reactors.
Description : In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear ... reaction C. Fission nuclear reaction D. Fusion nuclear reaction (Answer) E. None of these
Last Answer : D. Fusion nuclear reaction (Answer)
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 : Which spore is on a club and results from the fusion of two nuclei from different strains ofthesame fungi? A- Ascospore B- Basidiospore C- Blastospore D- Conidiospore
Last Answer : Basidiospore
Description : What refers to the strong repulsion between the positively charged nuclei which makes fusion reaction difficult to attain? A. Atomic repulsion B. Nuclear repulsion C. Coulomb repulsion D. Charge repulsion
Last Answer : Coulomb repulsion
Description : Which one of the following takes place during a nuclear fusion? (1) a heavy nucleus bombarded by neutrons breaks up (2) a heavy nucleus breaks up spontaneously (3) two light nuclei combine to form a heavy nucleus (4) a light nucleus breaks up spontaneously
Last Answer : two light nuclei combine to form a heavy nucleus
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 : $ 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 : In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf
Last Answer : Ans. ((c))
Description : Double fertilisation and triple fusion were discovered by (a) Hofmeister (b) Nawaschin and Guignard (c) Leeuwenhoek (d) Strasburger
Last Answer : (b) Nawaschin and Guignard
Description : Which of the following is true with reference to blood platelets? (1) They have prominent nuclei (2) They are involved in phagocytosis (3) They have a pigment called haemoglobin (4) They are also called thrombocytes
Last Answer : (4) They are also called thromb-ocytes. Explanation: Platelets, also called thrombocytes, are a component of blood whose function is to stop bleeding by clumping and clotting blood vessel injuries. ... red and white blood cells, platelets are not actually cells but rather small fragments of cells.
Description : Which of the following is true with reference to blood platelets? (1) They have prominent nuclei. (2) They are involved in phagocytosis (3) They have a pigment called haemoglobin (4) They are also called thrombocytes.
Last Answer : They are also called thrombocytes.
Description : How many electrons are involved in a carbon-carbon triple bond? (a) 1 (b) 2 (c) 3 (d) 6
Last Answer : 6
Description : The bond angles associated with the hybrid orbitals of a carbon involved in a triple bond is (a) 180° (b) 120° (c) 109° (d) 45
Last Answer : 180
Description : What type of urban model (multiple nuclei, concentric zone, etc) does Antananarivo, Madagascar follow? How?
Last Answer : Could you Google a map of the city and see if by looking at it you can determine the pattern?
Description : Why is there a tedency for electrons to settle around a nuclei in up to eight layers?
Last Answer : Quantized energy levels result from the relation between a particle's energy and its wavelength. For a confined particle such as an electron in an atom, the wave function has the form of ... next possible orbit has a distance twice the electron's wavelength. There can be nothing in between.
Description : What is the difference between basal and hypothalamaic nuclei? -Biology
Description : What happens to polar nuclei after fertilization? -Biology
Description : How many polar nuclei are in the ovule of the angiosperm? -Biology
Description : Polar nuclei and double fertilization -Biology
Description : Polar nuclei develop into. -Biology
Description : If a U-238 nucleus splits into two identical parts, how will the two nuclei be so produced? -Do You Know?
Description : Which force binds the nuclei ?
Last Answer : A strong nuclear force binds the nuclei.
Description : What about the nuclei whose protons are not equal but their mass is equal ?
Last Answer : All atoms that have the same mass but different atomic numbers are called isobars. E.g. 4018Ar and 4019Ca ; Here both argon and calcium have a mass of 40 but the atomic number is 18 and 19 , respectively.
Description : What is the number of nuclei with equal number of neutrons but not equal mass ?
Last Answer : : Isotones are called nuclei which have equal number of neutrons but not equal mass.
Description : What are the functions of red blood cells , white blood cells and nuclei ?
Last Answer : The function of red blood cells: Red blood cells carry oxygen from the lungs to the cells through hemoglobin. Red blood cells are the most important blood cells or cells that provide oxygen to the ... , the nucleus accumbens binds blood to that place. As a result, bleeding from the wound stops.
Last Answer : The ovary has 3 nuclei
Description : Three lobed nuclei occur in
Last Answer : Three lobed nuclei occur in A. Monocyte B. Eosinophil C. Neutrophil D. Basophil
Description : The triad of nuclei that is isotonic is
Last Answer : The triad of nuclei that is isotonic is A. `_(6)^( 14)C,_(7)^(15)N,_(9)^(17)F` B. `_(6)^(14)C,_(7)^(14)N ... )F` D. `_(6)^(14)C,_(7)^(14)N,_(9)^(19)F`
Description : Microscopic structure having plar nuclei is
Last Answer : Microscopic structure having plar nuclei is A. Pollen tube B. Embryo sac C. Pollen grain D. Male gemete
Description : $ Karyokinesis is followed by cytokinesis. ! Two daughter nuclei are formed after telophase.
Last Answer : $ Karyokinesis is followed by cytokinesis. ! Two daughter nuclei are formed after telophase. A. If both As ... wrong D. If both As and R are wrong.
Description : Muscle fibre is a ____ as the sarcoplasm contains many nuclei.
Last Answer : Muscle fibre is a ____ as the sarcoplasm contains many nuclei.
Description : The cells without nuclei are present in
Last Answer : The cells without nuclei are present in A. Vascular cambium B. Root hair C. Comkpanion cell D. Members of seive tube
Description : Supra optic nuclei (in hypothalamus) secrete the hormone
Last Answer : Supra optic nuclei (in hypothalamus) secrete the hormone A. ADH B. Oxytocin C. Pitocin D. Both (2) and (3)
Description : Assertion `(A) :` In radioactive disintegrations, `._(2)He^(4)` nuclei can come out of the nucleus but lighter `._(2)H^(3)` cannot. Reason `(R) :` The
Last Answer : Assertion `(A) :` In radioactive disintegrations, `._(2)He^(4)` nuclei can come out of the nucleus but ... D. If both (A) and (R ) are incorrect.
Description : Let `T` be the mean life of a radioactive sample. `75%` of the active nuclei present in th sample initially will deacy in time
Last Answer : Let `T` be the mean life of a radioactive sample. `75%` of the active nuclei present in th sample initially will ... ` C. 4T D. `2 (log_(e) 2) T`
Description : Which of the following nuclei are doubly magic? a)`._(92)U^(238)` b)`._(2)He^(4)` c)`._(8)O^(16)` d)`._(82)Pb^(208)`
Last Answer : Which of the following nuclei are doubly magic? a)`._(92)U^(238)` b)`._(2)He^(4)` c)`._(8)O^(16)` d)`._( ... O` C. `._(82)^(208)Pb` D. `._(92)^(238)U`
Description : Radioactivity is generally not found in a)Light nuclei b)Stable nuclei c)Heavy nuclei d)Nuclei of intermediate mass
Last Answer : Radioactivity is generally not found in a)Light nuclei b)Stable nuclei c)Heavy nuclei d)Nuclei of ... C. heavy nuclei D. nuclei of intermediate mass