Description : Which one of the following statements is correct? (a) Endothecium produces the microspores. (b) Tapetum nourishes the developing pollen. (c) Hard outer layer of pollen is called intine. (d) Sporogenous tissue is haploid
Last Answer : (b) Tapetum nourishes the developing pollen.
Description : Which layer of microsporangium provides nutrition to the developing pollen grains: a) Epidermis b) Endothecium c) Tapetum d) All
Last Answer : Ans : c) Tapetum
Description : Which one of the following statements is correct?a)Endothecium produces the microspores b)Tapetum nourishes the developing pollenc)Hard outer layer of pollen is called intined)Sporogenous tissue is haploid
Last Answer : Tapetum nourishes the developing pollen
Description : Role of tapetum in the formation pollen-grain wall? -Biology
Last Answer : answer:
Description : Which one of the following statements is not true? (a) Pollen grains of many species cause severe allergies. (b) Stored pollen in liquid nitrogen can be used in the crop breeding programmes. (c) Tapetum helps in the dehiscence of anther. (d) Exine of pollen grains is made up of sporopollenin.
Last Answer : (c) Tapetum helps in the dehiscence of anther.
Description : In a flowering plant, archesporium gives rise to (a) only the wall of the sporangium (b) both wall and the sporogenous cells (c) wall and the tapetum (d) only tapetum and sporogenous cells.
Last Answer : (b) both wall and the sporogenous cells
Description : Innermost layer of mucosa is made up of culumnar epithelium except `:`
Last Answer : Innermost layer of mucosa is made up of culumnar epithelium except `:` A. Oesophagus B. Duodenum C. Intestine D. Stomach
Description : What is the sequence from outermost to innermost layer of meninges?
Last Answer : dura mater- this is the strongest outermost covering and external to it is epidural space filled with adipose and veins arachnoid mater- is a web-like middle cover and deep to it lies the subarachnoid ... pia mater- is the very thin innermost covering and clings tightly to the brain and spinal cord
Description : Identify the correct statement with reference to human digestive system. (a) Ileum opens into small intestine. (b) Serosa is the innermost layer of the alimentary canal. (c) IIeum is a highly coiled part. (d) Vermiform appendix arises from duodenum.
Last Answer : (c) IIeum is a highly coiled part.
Description : Sapwood consists of (A) Innermost annular rings around the pith (B) Portion of timber between heartwood and cambium layer (C) Thin layers below the bark (D) Thin fibre which extends from the pith outwards and holds the annular rings together
Last Answer : Answer: Option B
Description : Through which cell of the embryo sac, does the pollen tube enter the embryo sac? (a) Egg cell (b) Persistant synergid (c) Degenerated synergids (d) Central cell
Last Answer : c) Degenerated synergids
Description : Point out the odd one. (a) Nucellus (b) Embryo sac (c) Micropyle (d) Pollen grain
Last Answer : (d) Pollen grain
Description : What does the filiform apparatus do at the entrance into ovule? (a) It brings about opening of the pollen tube. (b) It guides pollen tube from a synergid to egg. (c) It helps in the entry of pollen tube into a synergid. (d) It prevents entry of more than one pollen tube into the embryo sac
Last Answer : (b) It guides pollen tube from a synergid to egg.
Description : In angiosperms, functional megaspore develops into (a) embryo sac (b) ovule (c) endosperm (d) pollen sac.
Last Answer : a) embryo sac
Description : The plant parts which consist of two generations- one within the other (1) pollen grains inside the anther (2) germinated pollen grain with two male gametes (3) seed inside the fruit (4) embryo sac inside the ovule (a) (1) only (b) (1), (2), and (3) (c) (3) and (4)
Last Answer : (d) (1) and (4).
Description : Vegetative propagation is Pistiaoccurs bya) StIn angiosperms, functional megaspore develops into:a) Embryo sacb) Ovulec) Endospermd) Pollen sacolenb) Offsetc) Runnerd) Sucker
Last Answer : Embryo sac
Description : Which ones produce androgenic haploids in anther cultures? (a) Anther wall (b) Tapetal layer of anther wall (c) Connective tissue (d) Young pollen grains
Last Answer : (d) Young pollen grains
Description : Write the function of each of the following (i)Middle piece in human sperm (ii)Tapetum in anthers (iii)Luteinising hormone in human males -Biology
Last Answer : (i)Middle piece in human sperm contains several mitochondria which produces energy for the motility of the sperm. (ii) Tapetum in anthers It is the innermost layer of the anther. ... male stimulates the Leydig cells to produce testosterone, necessary to complete the process of spermatogenesis.
Description : The tapetum in which radial walls breakdown early are called as
Last Answer : The tapetum in which radial walls breakdown early are called as – Amoeboid tapetum
Description : Which of the following terms refers to a muscular, cramp-like pain in the extremities consistently reproduced with the same degree of exercise and relieved by rest? a) Intermittent claudication Intermittent ... or dilated vessel. d) Ischemia Ischemia is a term used to denote deficient blood supply.
Last Answer : a) Intermittent claudication Intermittent claudication is a sign of peripheral arterial insufficiency.
Description : Is studies of the human body, what is used to describ a blood-filled sac formed by an outpouching in an arterial or venous wall?
Last Answer : ANSWER: ANEURYSM
Description : The figure shows blood circulation in humans with labels A to D. Select the option which gives correct identification of label and functions of the part. (a) B - Capillary-Thin without muscle layer and ... blood to heart, pO2 = 95 mmHg (d) A - Artery-Thick walled and blood flows evenly
Last Answer : (c) D - Pulmonary vein-Takes oxygenated blood to heart, pO2 = 95 mmHg
Description : Idioms that mean "to tell [someone] everything." or "to tell one's innermost feelings and secrets"..?
Last Answer : Spill the beans
Description : the innermost part of a grain that is rich in protein, oils, vitamins, and minerals is known as the -General Knowledge
Last Answer : The innermost part of a grain that is rich in protein, oils, vitamins, and minerals is known as the germ.
Description : How did gulliver get into the innermost court to emperors place?
Last Answer : What is the answer ?
Description : Which zone of a candle flame is the hottest? (1) Dark innermost zone (2) Outermost zone (3) Middle luminous zone (4) Central zone
Last Answer : (3) Middle luminous zone Explanation: The outermost zone of the flame is blue in colour and it is the hottest part. The innermost zone is the least hot and black in colour.
Description : Emission of β-particles during radioactive decay of a substance is from (A) Innermost shell (B) Nucleus (C) Outermost shell (D) None of these
Last Answer : (B) Nucleus
Description : Coconut water from a tender coconut is (a) innermost layers of the seed coat (b) degenerated nucellus (c) immature embryo (d) free nuclear endosperm
Last Answer : (d) free nuclear endosperm.
Description : Identify the incorrect statement. (a) Heartwood does not conduct water but gives mechanical support. (b) Sapwood is involved in conduction of water and minerals from root to leaf. (c) Sapwood is the innermost ... . (d) Due to deposition of tannins, resins, oils, etc., heartwood is dark in colour.
Last Answer : (c) Sapwood is the innermost secondary xylem and is lighter in colour
Description : The innermost part of bones contains what?
Last Answer : Bone marrow
Description : The ________ zone of a candle flame is the hottest zone. a) innermost b)outermost c)middle d)none
Last Answer : b)outermost
Description : When we move from the outermost track to the innermost track in a magnetic disk, then density (bits per linear inch) (1) decreases (2) increases (3) remains the same (4) either remains constant or decreases
Last Answer : increases
Description : Match the following concerning essential elements and their functions in plants. Column-I Column-II (A) Iron (i) Photolysis of water (B) Zinc (ii) Pollen germination (C) Boron (iii) Required for chlorophyll biosynthesis (D) Manganese (iv) IAA biosynthesis
Last Answer : (c) (iii) (iv) (ii) (i)
Description : Exine layer of pollen grain is made up of : a) sporopollenin b)Pectin c) cellulose d)chitin
Last Answer : Ans: a)sporopollenin
Description : Which one of the following is surrounded by a callose wall? (a) Male gamete (b) Egg (c) Pollen grain (d) Microspore mother cell
Last Answer : (d) Microspore mother cell
Description : Cockroach cannot survive in the water because its respiratory organ is - (1) Gill (2) Trachea (3) Book lung (4) Pulmonary Sac
Last Answer : (2) Trachea Explanation: In tetrapod anatomy, the trachea or windpipe, is a tube that connects the pharynx and larynx to the luhgs, allowing the passage of air. It is lined with pseudo- ... larynx and then the pharynx where it can be either swallowed into the stomach or expelled as phlegm.
Description : Given a grammar : S1→Sc, S→SA|A, A→aSb|ab, there is a rightmost derivation S1=>Sc =>SAC=>SaSbc. Thus, SaSbc is a right sentential form, and its handle is (A) SaS (B) be (C) Sbe (D) aSb
Last Answer : (D) aSb
Description : Cockroach cannot survive in the water because its respiratory organ is (1) Gill (2) Trachea (3) Book lung (4) Pulmonary Sac
Last Answer : Trachea
Description : How does a surgeon operate on a fetus without damaging the amniotic sac ?
Last Answer : The sac can reseal itself from a puncture. That’s why amniocentesis can be performed, because a needle is inserted into the sac and extracts a small amount of fluid, which is then analyzed for the baby’s chromosomes.
Description : How many babies are in a moth sac
Last Answer : Need Answer
Description : What is embryo sac in plants? -Biology
Description : What is the function of embryo sac in plant? -Biology
Description : What are sac fungi? -Biology
Description : Reproductive characteristics of sac fungi. -Biology
Description : What characteristics are common to all sac fungi? -Biology
Description : What are some examples of sac fungi? -Biology
Description : what is the function of the polar nucleus in an embryo sac? -Biology
Description : Nutrition of embryo sac? -Biology
Description : Why is the embryo sac called the female gametophyte? -Biology
Description : Structure of the embryo sac? -Biology