Description : Function of filiform apparatus is to (a) recognise the suitable pollen at stigma (b) stimulate division of generative cell (c) produce nectar (d) guide the entry of pollen tube.
Last Answer : (d) guide the entry of pollen tube.
Description : Function of filiform apparatus is toa)Guide the entry of pollen tubeb)Recognize the suitable pollen at stigmac)Stimulate division of generative celld)Produce nectar
Last Answer : )Guide the entry of pollen tube
Description : Filiform apparatus is a characteristic feature of (a) suspensor (b) egg (c) synergid (d) zygote.
Last Answer : (c) synergid
Description : Filiform apparatus is a characteristic feature of:a) Suspensorb) Eggc) Synergidd) Zygote
Last Answer : c) Synergid
Description : In majority of angiosperms, (a) egg has a filiform apparatus (b) there are numerous antipodal cells (c) reduction division occurs in the megaspore mother cells (d) a small central cell is present in that embryo sac.
Last Answer : (c) reduction division occurs in the megaspore mother cells
Description : In angiosperm female gametophyte is: a) Embryo b) Egg Apparatus c)Embryo sac d) synergids
Last Answer : Ans: c)Embryo sac
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 : 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 : .Nucellar embryo is (a) amphimictic haploid(b) amphimictic diploid (c) apomictic haploid (d) apomictic diploid.
Last Answer : ) apomictic diploid.
Description : .In a type of apomixis known as adventive embryony, embryos develop directly from the (a) nucellus or integuments (b) zygote (c) synergids or antipodals in an embryo sac (d) accessory embryo sacs in the ovule
Last Answer : (a) nucellus or integuments
Description : In angiosperms, pollen tube liberate their male gametes into the (a) central cell (b) antipodal cells (c) egg cell (d) synergids.
Last Answer : d) synergids.
Description : Egg cell without synergids is found in embryosac of
Last Answer : Egg cell without synergids is found in embryosac of – Plumbagella type
Description : Apomictic seedlings are also called as: a. Nucellar seedlings b. Sexual seedlings c. Embryonic seedlings d. None
Last Answer : Nucellar seedling
Description : Nucellar polyembryony is reported in species of (a) Citrus (b) Gossypium (c) Triticum (d) Brassica.
Last Answer : (a) Citrus
Description : Which one of the following generates new genetic combinations leading to variation? (a) Vegetative reproduction (b) Parthenogenesis (c) Sexual reproduction (d) Nucellar polyembryony
Last Answer : (c) Sexual reproduction
Description : Nucellar polyembryony is reported in species of:a) Citrusb) Gossypiumc) Triticumd) Brassica
Last Answer : a) Citrus
Description : Aleurone layer takes part in
Last Answer : Aleurone layer takes part in A. Protection of delicate embryo B. Enzyme synthesis C. Transfer of ... . Transfer of food from cotyledous to embryo tips
Description : The aleurone layer in maize grain is specially rich in (a) proteins (b) starch (c) lipids (d) auxins.
Last Answer : (a) proteins
Description : The scutellum observed in a grain of wheat or maize is comparable to which part of the seed in other monocotyledons? (a) Cotyledon (b) Endosperm (c) Aleurone layer (d) Plumule
Last Answer : (a) Cotyledon
Description : Which one of the following statements is correct? (a) The seed in grasses is not endospermic. (b) Mango is a parthenocarpic fruit. (c) A proteinaceous aleurone layer is present in maize grain. (d) A sterile pistil is called a staminode.
Last Answer : (c) A proteinaceous aleurone layer is present in maize grain.
Description : The ____ is the large central portion of the kernel and contains most of the starch. a. aleurone c. endosperm b. bran d. germ
Last Answer : c. endosperm
Description : What would be the number of chromosomes of the aleurone cells of a plant with 42 chromosomes in its root tip cells?a) 42b) 63c) 84d) 21
Last Answer : b) 63
Description : Cells of aleurone layer function for
Last Answer : Cells of aleurone layer function for – hydrolyzing the food material of seeds
Description : What does the generative cell produce? -Biology
Last Answer : answer:
Description : What is a generative cell? -Biology
Description : Function of generative cell. -Biology
Description : What is a generative cell ?
Last Answer : : The nucleus or nucleus of pollen is divided into mitotic system. In this division a large cell and a small cell are formed. The large cell is called the tube cell and the small cell is called the generative cell .
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 : Generative cell was destroyed by laser but a normal pollen tube was still formed because (a) vegetative cell is not damaged (b) contents of killed generative cell stimulate pollen growth (c) laser beam stimulates growth of pollen tube (d) the region of emergence of pollen tube is not harmed.
Last Answer : (a) vegetative cell is not damaged
Description : Male gametes in angiosperms are formed by the division of (a) generative cell (b) vegetative cell (c) microspore mother cell (d) microspore.
Last Answer : (a) generative cell
Description : Which one of the following statements is wrong?a)Pollen grains in some plants remain viable for monthsb)Intine is made up of cellulose and pectinc)When pollen is shed at two-celled state, double fertilization does not take placed)Vegetative cell is larger than generative cell
Last Answer : c)When pollen is shed at two-celled state, double fertilization does not take place
Description : What are the functions of the synergids? -Biology
Description : Apomictic embryos in Citrus arise from (a) synergids (b) maternal sporophytic tissue in ovule (c) antipodal cells (d) diploid egg.
Last Answer : (b) maternal sporophytic tissue in ovule
Description : .Which one of the following pairs is wrongly matched? (a) Ginkgo – Archegonia (b) Salvinia – Prothallus (c) Viroids – RNA (d) Mustard – Synergids
Last Answer : (b) Salvinia – Prothallus
Description : The papillae that are few in numbers, associated with MOST taste buds, associated with Von Ebner’s glands are: a. Fungiform. b. Circumvallate. c. Foliate. d. Filiform.
Last Answer : b. Circumvallate.
Description : On inspection of lateral boarder of the tongue at the base, which structure would you expect to find: a. Filiform papillae. b. Fungiform papillae. c. Taste buds. d. Lymph nodes. e. Circumvallate papillae.
Last Answer : d. Lymph nodes.
Description : A patient complains of finger-like growth on the lateral aspect of the tongue. The lesion is painless and of normal colour. The MOST PROBABLE diagnosis is: A. Folate papillae B. Filiform papillae C. Neurofibroma D. Papilloma
Last Answer : D. Papilloma
Description : The papillae that are few in numbers, associated with MOST taste buds, associated with Von Ebner’s glands are:** A. Fungiform B. Circumvallate C. Foliate D. Filiform
Last Answer : B. Circumvallate
Description : On inspection of lateral boarder of the tongue at the base, which structure would you expect to find: A. Filiform papillae B. Fungiform papillae C. Taste buds D. Lymph nodes E. Circumvallate papillae
Last Answer : D. Lymph nodes
Description : Benign migratory glossitis or Geographic Tongue, manifests itself in the oral cavity as, A. Irregularly outlined areas of hyperkeratosis of the dorsal surface of the tongue B. Furrows outlined the ... (fissures) radiating from a central fissure G. Irregular area in the midline of the tongue
Last Answer : C. Loss (atrophy) of filiform papillae in multiple irregularly outlined areas
Description : Which one of the following is a matching pair of a body feature and the animal possessing it? (a) Ventral central – Leech nervous system (b) Pharyngeal gill slits – Chamaeleon absent in embryo (c) Ventral heart – Scorpion (d) Post-anal tail – Octopus
Last Answer : (a) Ventral central – Leech nervous system
Description : Match the following cell structure with its characteristic feature. (A) Tight junctions (i) Cement neighbouring cells together to form sheet (B) Adhering junctions (ii) Transmit information through chemical to another cells (C) Gap ... iii) (c) (iii) (i) (iv) (ii) (d) (iv) (iii) (i) (ii)
Last Answer : (c) (iii) (i) (iv) (ii)
Description : The unifying feature of the archaea that distinguishes them from the bacteria is A- habitats which are extreme environments with regard to acidity B- absence of a nuclear membrane temperature ... of a cell wall containing a characteristic outer membrane D- cytoplasmic ribosomes that are 70S
Last Answer : absence of a nuclear membrane temperature
Description : The characteristic feature of basal cell carcinoma is: A. Blood metastasis B. Does not erode bone C. Intensive involvement / inveterately characteristic/ D. Radio resistant
Last Answer : C. Intensive involvement / inveterately characteristic/
Description : Which system uses computers at higher level strategies a.Variant CAPP b.Generative CAPP c.Hybrid CAPP d.All of the above
Last Answer : b.Generative CAPP
Description : Which system uses computers at lower-level strategies a.Variant CAPP b.Generative CAPP c.Hybrid CAPP d.All of the above
Last Answer : a.Variant CAPP