Description : The sexual reproductive organs of aspergillus are – (1) Spermatium and Oogonium (2) Antheridium and Oogonium (3) Spermatium and Ascogonium (4) Antheridium and Ascogonium
Last Answer : (4) Antheridium and Ascogonium Explanation: Sexual reproduction in Aspergillus is rare and takes place in favourable conditfons. Sex organs are produced on the same mycelium which has produced conidia. Male ... of archicarp as a result of which they become spirally coiled and their tips get fused.
Description : The sexual reproductive organs of aspergillus are : (1) Spermatium and Oogonium (2) Antheridium and Oogonium (3) Spermatium and Ascogonium (4) Antheridium and Ascogonium
Last Answer : Antheridium and Ascogonium
Description : Difference between archegonium and antheridium. -Biology
Last Answer : answer:
Description : Antheridium and archegonium in marchantia? -Biology
Description : Male and female sex hormone respectivley which stimulate development of sex organ, sexual behaviour, gametogensis are
Last Answer : Male and female sex hormone respectivley which stimulate development of sex organ, sexual behaviour, gametogensis are
Description : The genes, which remain confined to differential region of ‘Y’ chromosome, are: (a) Autosomal genes (b) Holandric genes (c) Sex linked genes (d) Mutant genes
Last Answer : Ans. ((b))
Description : What is the name of the reproductive organ ?
Last Answer : Stolon is the name of the reproductive organ.
Description : What is organ reproduction ?
Last Answer : Reproduction that takes place when a part of the body is broken or an organ is transformed without producing any kind of asexual molecule or germ cell is called organ reproduction.
Description : The scutellum of the gram embryo is a: (a) Vestigial organ (b) Photosynthetic organ (c) Absorptive organ (d) Protective organ
Last Answer : Ans. ((a))
Description : In the secondary culture, cells are obtained from a. primary culture b. the organism c. organ culture d. phenotypic culture
Last Answer : a. primary culture
Description : Consider the following statements: (1) Cucurbits are monoecious plant (2) In mango, neuter, male and female and female flowers occur together (3) Legumenous plants how unisexuality (4) Oblique septa is found in Rosaceae
Description : Female gametophyte of Gnetum follows the developmental pattern of ..... a) tetrasporic type b) bisporic type c) monosporic type d) none of the above.
Last Answer : a) tetrasporic type
Description : The abortive female flower in the male cone of Gnetum can be distinguished from the normal ovules of the female cone apart from its function by the presence of …. a) no envelops b) single envelope c) two envelopes d) several envelops.
Last Answer : b) single envelope
Description : Archegonium of bryophyte. -Biology
Description : Are archegonium haploid or diploid. -Biology
Description : Moss archegonium haploid or diploid -Biology
Description : How many neck canal cells are found in the archegonium of a fern? (1) One (2) Two (3) Three (4) Four
Last Answer : (1) One Explanation: Archegonium is the female reproductive organ in ferns and mosses. The upper part of the archegonium, the neck, consists of four rows of cells containing central neck cells. The uppermost ... the lowest cell is the ventral canal cell. It has one neck canal cell with two nuclei.
Description : A plant growing on moist soil has a thalloid body, rhizoids and archegonium. To which group of Metaphyta do you include it? Give one example of the group.
Last Answer : The plant belongs to bryophyte Ex: Riccia, Funaria etc.
Description : .A well developed archegonium with neck consisting of 4-6 rows and neck canal cells, characterises (a) gymnosperms and flowering plants (b) pteridophytes and gymnosperms (c) gymnosperms only (d) bryophytes and pteridophytes
Last Answer : d) bryophytes and pteridophytes.
Description : Which one of the following is not common between Funaria and Selaginella? (a) Archegonium (b) Embryo (c) Flagellate sperms (d) Roots
Last Answer : (d) Roots
Description : Bryophytes are dependent on water, because (a) water is essential for their vegetative propagation (b) the sperms can easily reach upto egg in the archegonium (c) archegonium has to remain filled with water for fertilization (d) water is essential for fertilization for their homosporous nature.
Last Answer : (b) the sperms can easily reach upto egg in the archegonium
Description : How many neck canal cells are found in the archegonium of a fern ? (1) One (2) Two (3) Three (4) Four
Last Answer : One
Description : What is made in the antheridium? -Biology
Description : What is the function of antheridium? -Biology
Description : Structure of the mature antheridium in the genus Riccia? -Biology
Description : Relationship between an antheridium and an antheridiophore? -Biology
Description : Monoecious plant of Chara shows occurrence of (a) upper antheridium and lower oogonium on the same plant (b) upper oogonium and lower antheridium on the same plant (c) antheridiophore and archegoniophore on the same plant (d) stamen and carpel on the same plant.
Last Answer : (b) upper oogonium and lower antheridium on the same plant
Description : Which one of the following is wrong about Chara? (a) Upper oogonium and lower round antheridium (b) Globule and nucule present on the same plant (c) Upper antheridium and lower oogonium (d) Globule is male reproductive structure
Last Answer : (c) Upper antheridium and lower oogonium
Description : Which one of the following is wrong about Chara?a)Globule is male reproductive structureb)Upper oogonium and lower round antheridiumc)Globule and nucule present on the same plantd)Upper antheridium and lower oogonium
Last Answer : )Upper antheridium and lower oogonium
Description : Monoecious plant of Chara shows occurrence of:a)Upper antheridium and lower oogonium on the same plant b)Upper oogonium and lower antheridium on the same plant c)Antheridiophore and archegoniophore on the same plantd)Stamen and carpel on the same plan
Last Answer : b)Upper oogonium and lower antheridium on the same plant
Description : Which is not a secondary sex organ :-
Last Answer : Which is not a secondary sex organ :- A. Vagina B. Penis C. Prostate D. Mammary gland
Description : Secondary sex organ is
Last Answer : Secondary sex organ is A. Testis B. Ovary C. Beard D. Vas deferens
Description : Which one is a primary sex organ ?
Last Answer : Which one is a primary sex organ ? A. Scrotum B. Penis C. Testis D. Prostate gland
Description : Which of the following is the primary sex organ in man? (1) Prostrate (2) Testis (3) Vas defences (4) Seminal vesicles
Last Answer : (2) Testis Explanation: In the case of male reproductive system the primary sex organs are a pair of testes lying outside the abdominal cavity, enclosed in a sac called the scrotum.
Description : Medulla oblongata is a part of human ------? A. Heart B. Brain (Answer) C. Liver D. Sex organ
Last Answer : B. Brain (Answer)
Description : Medulla oblongata is a part of human A.Heart B.Brain C.Liver D.Sex organ
Last Answer : B.Brain
Description : Biological characteristics distinguishing male from female is called--- a) Heterosexuality b) b) Gender c) Sex d) Homosexuality
Last Answer : c) Sex
Description : Why is unfavourable female sex ratio found in India and other South Asian Countries? -Geography
Last Answer : (i) Widespread gender discrimination and high mortality rate of female child during birth. (ii) Lower socio-economic status of women. High female infant mortality due negligence and lack ... male child which results in high female foeticide and female infanticide. Domestic violence against women.
Description : The female sex hormone is
Last Answer : The female sex hormone is A. Estrogen B. Androgen C. Insulin D. Adrenline
Description : Sex refers to the social aspects of differences between male and female.
Last Answer : Correct underlined words and complete the sentence : Sex refers to the social aspects of differences between male and female.
Description : How can a female inherit a sex linked trait?
Last Answer : What is the answer ?
Description : A genetically diseased father (male) marries with a normal female and gives birth to 3 carrier girls and 5 normal sons. It may be which type of genetic disease? (a) Sex-influenced disease (b) Blood group inheritance disease (c) Sex-linked disease (d) Sex-recessive disease
Last Answer : (c) Sex-linked disease
Description : Which one of the following conditions correctly describes the manner of determining the sex? (a) Homozygous sex chromosomes (ZZ) determine female sex in birds. (b) XO type of sex chromosomes ... s syndrome, determines female sex. (d) Homozygous sex chromosomes (XX) produce male in Drosophila.
Last Answer : (b) XO type of sex chromosomes determine male sex in grasshopper.
Description : A fruit fly is heterozygous for sex-linked genes, when mated with normal female fruit fly, the males specific chromosome will enter egg cell in the proportion (a) 3 : 1 (b) 7 : 1 (c) 1 : 1 (d) 2 : 1.
Last Answer : (c) 1 : 1
Description : In our society women are blamed for producing female children. Choose the correct answer for the sex-determination in humans. (a) Due to some defect like aspermia in man. (b) Due to the genetic make up of the ... . (c) Due to the genetic make up of the egg. (d) Due to some defect in the women.
Last Answer : (b) Due to the genetic make up of the particular sperm which fertilises the egg.
Description : Which one of the following is the most likely root cause why menstruation is not taking place in regularly cycling human female? (a) Maintenance of the hypertrophical endometrial lining (b) ... the blood stream (c) Retention of well-developed corpus luteum (d) Fertilisation of the ovum
Last Answer : (b) Maintenance of high concentration of sex- hormones in the blood stream
Description : The commonest female stereotypical role that is prevalent is of the a. Weaker Sex. b. Homemaker. c. Compassionate. d. None of the above.
Last Answer : b. Homemaker.