Description : $ Tracheophytes are the plants with vascular tissues. ! Tracheophytes are of three types (i) Pteridophytes (ii) Gymnosperms (iii) Angiosperms
Last Answer : $ Tracheophytes are the plants with vascular tissues. ! Tracheophytes are of three types (i) Pteridophytes (ii ... D. If both As and R are wrong.
Description : $ Homologous organs are those which are functionally similar but different by origin. ! Homothallic plants are those which are unisexual.
Last Answer : $ Homologous organs are those which are functionally similar but different by origin. ! Homothallic plants are ... D. If both As and R are wrong.
Description : $ Those plants which produce seeds, without the formation of fruits are called Gymnosperms. ! Endosperm is triploid in Angiospherms
Last Answer : $ Those plants which produce seeds, without the formation of fruits are called Gymnosperms. ! Endosperm is ... D. If both As and R are wrong.
Description : $ Flower of Rafflesia is largest sized. ! Large flowers have wind pollination
Last Answer : $ Flower of Rafflesia is largest sized. ! Large flowers have wind pollination A. If both As and R are ... is wrong D. If both As and R are wrong.
Description : $ Nucleus was discovered by Robert Brown ! Large sized organisms have large sized cells.
Last Answer : $ Nucleus was discovered by Robert Brown ! Large sized organisms have large sized cells. A. If both As and ... is wrong D. If both As and R are wrong.
Description : Plants reproducing by spores such as mosses and ferns are grouped under the general term (a) cryptogams (b) bryophytes (c) sporophytes (d) thallophytes
Last Answer : (a) cryptogams
Description : Flowerless plants are termed as: (1) Phanerogams (2) Bryophytes (3) Thallophytes (4) Cryptogams
Last Answer : Cryptogams
Description : Name the group of spores producing plants in which sex organs are concealed.
Last Answer : Name the group of spores producing plants in which sex organs are concealed.
Description : Compared with the gametophytes of the bryophytes, the gametophytes of vascular plants tend to be (a) smaller but to have larger sex organs (b) larger but to have smaller sex organs (c) larger and to have larger sex organs (d) smaller and to have smaller sex organs.
Last Answer : (d) smaller and to have smaller sex organs.
Description : $ Weak stems which can climb a support without any climbing organs are called Twiners. ! Some Twiners have clinging roots.
Last Answer : $ Weak stems which can climb a support without any climbing organs are called Twiners. ! Some Twiners have ... wrong D. If both As and R are wrong.
Description : $ A chromosomes with equal sized arms is called isobrachial. ! Barr bodies are present in the cells of human females.
Last Answer : $ A chromosomes with equal sized arms is called isobrachial. ! Barr bodies are present in the cells of human ... wrong D. If both As and R are wrong.
Description : $ Acetabularia is the largest sized single called green algra. ! PPLO is the smallest sized prokaryote.
Last Answer : $ Acetabularia is the largest sized single called green algra. ! PPLO is the smallest sized prokaryote. A. ... wrong D. If both As and R are wrong.
Description : Answer: Cryptogams.
Last Answer : How many times is the proton heavier than the electron?
Description : What are Phanerogams and Cryptogams?
Last Answer : What are Phanerogams and Cryptogams?
Description : Why bryophytes are called non vascular Cryptogams?
Last Answer : Ans: Bryophytes do not contain Xylem and phloem tissues so they are non vascular and do not produce visible flowers. So they are Cryptogams.
Description : What are Cryptogams?
Last Answer : Ans: Plants in which reproductive structures are embedded in the plant body and do not bear flowers or seeds.
Description : Each new sex cell is called a. Gamete b. embryo c. zygote d. -----
Last Answer : Gamete
Description : The permissible use of the technique amniocentesis is for (a) detecting sex of the unborn fetus (b) artificial insemination (c) transfer of embryo into the uterus of a surrogate mother (d) detecting any genetic abnormality.
Last Answer : (d) detecting any genetic abnormality.
Description : $ The process of formation of polysaccharides by condensation of monomers is called hydrolysis. Glycogen is a stored food materials found in plants.
Last Answer : $ The process of formation of polysaccharides by condensation of monomers is called hydrolysis. Glycogen is a ... D. If both As and R are wrong.
Description : $ Wing of a bat is said to be homologous to the wing of bird and analogous to the wing of an insect. ! Homologous organs are similar inhiction but ana
Last Answer : $ Wing of a bat is said to be homologous to the wing of bird and analogous to the wing of an insect. ! ... R is wrong D. If both As and R are wrong.
Description : $ The excretory organs of Flatworms are called Flame cells. ! Excretory cells help in endocytosis.
Last Answer : $ The excretory organs of Flatworms are called Flame cells. ! Excretory cells help in endocytosis. A. If ... wrong D. If both As and R are wrong.
Description : $ Circinate ptyxis is found in Angiosperms. ! The male reproductive organs of Angiosperms are called antheridia.
Last Answer : $ Circinate ptyxis is found in Angiosperms. ! The male reproductive organs of Angiosperms are called antheridia. A ... D. If both As and R are wrong.
Description : $ The relationship between comparable organs and structure is called Analogy . ! A group of related genera is classified as kingdom.
Last Answer : $ The relationship between comparable organs and structure is called Analogy . ! A group of related genera is ... wrong D. If both As and R are wrong.
Description : $ Haemophilia is a sex linked disease ! Haemophilia is due to a recessive gene.
Last Answer : $ Haemophilia is a sex linked disease ! Haemophilia is due to a recessive gene. A. If both As and R are ... R is wrong D. If both As and R are wrong.
Description : $ The term chromosome was introduced by Waldeyer. ! Sex chromosomes are also called Heterosomes.
Last Answer : $ The term chromosome was introduced by Waldeyer. ! Sex chromosomes are also called Heterosomes. A. If both ... wrong D. If both As and R are wrong.
Description : $ Sicke cell anaemia is a type of pleiotropy. ! Sex linked inharitance is also called criss cross inheritance.
Last Answer : $ Sicke cell anaemia is a type of pleiotropy. ! Sex linked inharitance is also called criss cross inheritance ... wrong D. If both As and R are wrong.
Description : In male sex organs _______ system is responsible for erection. (a) Sympathetic (b) Parasympathetic (c) Norepinephrine (d) None of the above
Last Answer : Ans: B
Description : The testes in humans are situated outside the abdominal cavity inside a pouch called scrotum. The purpose served is for (a) maintaining the scrotal temperature lower than the internal body ... growth of epididymis (d) providing a secondary sexual feature for exhibiting the male sex.
Last Answer : (a) maintaining the scrotal temperature lower than the internal body temperature
Description : Identify the hormone with its correct matching of source and function. (a) Oxytocin - posterior pituitary, growth and maintenance of mammary glands. (b) Melatonin - pineal gland, regulates the ... sex organs. (d) Atrial natriuretic factor - ventricular wall, increases the blood pressure.
Last Answer : (b) Melatonin - pineal gland, regulates the normal rhythm of sleepwake cycle
Description : Sexual reproduction in Spirogyra is an advanced feature because it shows (a) different sizes of motile sex organs (b) same size of motile sex organs (c) morphologically different sex organs (d) physiologically differentiated sex organs
Last Answer : (d) physiologically differentiated sex organs.
Description : What are the sex organs provided in some bacteria? (a) Sex pili (b) Plasmid (c) Circular DNA (d) Gametes
Last Answer : (a) Sex pili
Description : The primary sex organs of the female reproductive system is/are the a. Uterus. b. Vagina. c. Clitoris d. Ovaries.
Last Answer : d. Ovaries
Description : 4 Identify from the following sexually transmitted diseases whh does not specifically affect the sex organs. a) AIDS b) Gonorrhea c) Genital herpes d) Trichomoniasis
Last Answer : ANS: a AIDS
Description : Examples of pteridophytes plants? -Biology
Last Answer : answer:
Description : Our major foods, fibres, spices, fruits and beverage crops are (a) Flowering plants (b) Gymnospermous plants (c) Pteridophytes (d) Bryophytes
Last Answer : Ans:(a)
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 : In which of the following would you place the plants having vascular tissue lacking seeds? (a) Pteridophytes (b) Gymnosperms (c) Algae (d) Bryophytes
Last Answer : (a) Pteridophytes
Description : $ Secondary growth occurs in those plants which have closed vascular bundles. ! Cork is produced by intrafascicular cambium.
Last Answer : $ Secondary growth occurs in those plants which have closed vascular bundles. ! Cork is produced by ... D. If both As and R are wrong.
Description : $ Air layering is performed in those plants which have many, long flexible branches near the soil level. ! Layering method of vegetative propagation i
Last Answer : $ Air layering is performed in those plants which have many, long flexible branches near the soil level. ! ... wrong D. If both As and R are wrong.
Description : $ Those parts of the plants which help in vegetative reproduction are called propagules. ! Vegetative propagation is a type of Asexual reproduction
Last Answer : $ Those parts of the plants which help in vegetative reproduction are called propagules. ! Vegetative propagation ... D. If both As and R are wrong.
Description : $ Funaria plant is monoecious. ! Monoecious plants are those which are always unisexual.
Last Answer : $ Funaria plant is monoecious. ! Monoecious plants are those which are always unisexual. A. If both As and ... wrong D. If both As and R are wrong.
Description : $ Annual plants live for only one favourable season. ! Polycarpic plants are those which produces flowers and fruits many times during their life span
Last Answer : $ Annual plants live for only one favourable season. ! Polycarpic plants are those which produces flowers and ... D. If both As and R are wrong.
Description : $ Halophytes are those plants which grow in salty soils. Heliophytes are those plants which grown in direct sunlight
Last Answer : $ Halophytes are those plants which grow in salty soils. Heliophytes are those plants which grown in direct ... wrong D. If both As and R are wrong.
Description : $ Green plants have two types of nutrition. (i) Organic nutrition (ii) Inorganic nutrition ! Micronutrients are required in large quntities.
Last Answer : $ Green plants have two types of nutrition. (i) Organic nutrition (ii) Inorganic nutrition ! Micronutrients ... wrong D. If both As and R are wrong.
Description : Describe the post-zygotic events leading to implantation and placenta formation in humans. Mention any two functions of placenta. [All India 2010] or Explain the process of fertilisation in human female ... events in a sequential order up to implantation of the embryo. [Foreign 2010] -Biology
Last Answer : Post-zygotic events leading to implantation and placenta formation. After implantation of blastocyst, the finger-like projections called chorionic villi, appear on the trophoblast and is surrounded by ... acts as an endocrine gland and secretes hormones like hPL, hCG, oestrogen and progesterone.
Description : In angiosperm, triple fusion is necessary for the formation of: (a) Embryo (b) Pollen (c) Endosperm (d) Leaf
Last Answer : Ans. ((c))
Description : Which of the following correctly explains the phenomenon of "Test Tube Bally"? (1) When every process of embryo formation is in the test tube. (2) When the embryo develops in a test tube ... is external and development is internal. (4) When the fertilisation is internal and development is external.
Last Answer : (3) When the fertilisation is external and development is internal. Explanation: Test tube baby is born from in vitro fertilization. In vitro fertilization (IVF) is a process by which an egg ... ) is then transferred to the patient's uterus with the intention of establishing a successful pregnancy.
Description : Match column I with column II and select the correct option using the given codes. Column I Column II A. Mons pubis (i) Embryo formation B. Antrum (ii) Sperm C. Trophectoderm (iii)Female external genitalia D. Nebenkern (iv) Graafian ... (i), C-(iv), D-(ii) (d) A-(i), B-(iv), C-(iii), D-(ii
Last Answer : (b) A-(iii), B-(iv), C-(i), D-(ii)
Description : Microsporogenesis is the formation of : a) Microspore b) Megaspore c) Egg d) Embryo sac
Last Answer : Ans : a) Microspore
Description : Which of the following correctly explains the phenomenon of Test Tube Baby ? (1) When every process of embryo formation is in the test tube. (2) When the embryo develops in a test ... is external and development is internal. (4) When the fertilisation is internal and development is external.
Last Answer : When the fertilisation is external and development is internal.