Description : What is the correct observation regarding size of egg, blastula and gastrula
Last Answer : What is the correct observation regarding size of egg, blastula and gastrula A. There is progressive ... while zygote and blastula are of same size.
Description : Tissue differentiation begins at which stage? a) zygote b) morula c) blastula d) gastrula
Last Answer : ANSWER: D -- GASTRULA
Description : The blastula develops into the: a) gastrula b) morula c) endoderm d) zygote
Last Answer : ANSWER: A -- GASTRULA
Description : Explain virus cultivation in embryonated eggs. -Biology
Last Answer : answer:
Description : In which one of the following the genus name, its two characters and its class/phylum are correctly matched? (a) Ascaris (i) Body segmented Annelida (ii) Males and females distinct (b) ... hair (ii) Oviparous (d) Aurelia (i) Cnidoblasts Coelenterata (ii) Organ level of organization
Last Answer : (a) Ascaris (i) Body segmented Annelida (ii) Males and females distinct
Description : Gastrula has a pore known as
Last Answer : Gastrula has a pore known as A. Zoospore B. Oospore C. Gonospore D. Blastopore.
Description : In gastrula stage which layer are formed
Last Answer : In gastrula stage which layer are formed A. Ectoderm B. Mesoderm C. Endoderm D. All
Description : How does the embryo turn from gastrula into neurula ?
Last Answer : How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates? The neurula stage is characterized by the appearing of the neural tube along the dorsal region of the ... the nervous system is the ectoderm (the same germ layer that gives birth to the skin).
Last Answer : How is the neural tube formed? What is the embryonic origin of the nervous system in vertebrates? The neurula stage is characterized by the appearing of the neural tube along the dorsal region of the ... the ectoderm (the same germ layer that gives birth to the skin). Image Diversity: neurula
Description : Morphogenetic movements convert hollow spherical blastula into
Last Answer : Morphogenetic movements convert hollow spherical blastula into A. Gastrula B. Morula C. Neurula D. Embryonic disc
Description : A morula can be differentiated from blastula in
Last Answer : A morula can be differentiated from blastula in A. Presence of cavity B. Presence of more yolk C. Presence of yolk D. Absence of cavity.
Description : The superficial blastula is the characteristic of
Last Answer : The superficial blastula is the characteristic of A. Birds B. Reptiles C. Insects D. Annelids.
Description : Describe the structure of blastula
Last Answer : Describe the structure of blastula
Description : Do cells grow in blastula?
Last Answer : Need answer
Description : After the blastula stage what is the following stage of the embryonic development ?
Last Answer : How is the passage from blastula to the next stage called? The blastula turns into gastrula in a process known as gastrulation.
Last Answer : How is the passage from blastula to the next stage called? The blastula turns into gastrula in a process known as gastrulation. Image Diversity: gastrula
Description : Blastopore is (a) opening of neural tube (b) opening of gastrocoel (c) future anterior end of embryo (d) found in blastula.
Last Answer : b) opening of gastrocoel
Description : Identify the human developmental stage shown as well as the related right place of its occurrence in a normal pregnant woman and select the right option for the two, together. Developmental Site of ... tube (c) Blastocyst - Uterine wall (d) 8-celled morula - Starting point of Fallopian tube
Last Answer : (c) Blastocyst – Uterine wall
Description : DIFFERENTIATE BETWEEN MORULA AND BLASTULA STAGES OF MAMMALIAN EMBRYO.
Last Answer : ANS. MORULA: (i) 8 TO 16 CELLED STAGE EMBRYO (ii) SOLID WITHOUT ANY CAVITY BLASTULA: (i) 32 CELLED STAGE EMBRYO. (ii) HOLLOW WITH A CAVITY CALLED BLASTOCOEL
Description : In gymnosperms, the pollen chamber represents (a) a cavity in the ovule in which pollen grains are stored after pollination (b) an opening in the megagametophyte through which the pollen tube approaches the ... pollen grains develop (d) a cell in the pollen grain in which the sperms are formed.
Last Answer : (c) the microsporangium in which pollen grains develop
Description : Ascaris is characterized by
Last Answer : Ascaris is characterized by A. Absence of true coelom but presence of metamerism B. Presence of ... . D. Presence of true coelom and metamerism.
Description : How many of the following chordates have flame cells as exretory organ. Planaria, Ascaris, Amphioxus, Tapeworm, Nereis, Scoliodon.
Last Answer : How many of the following chordates have flame cells as exretory organ. Planaria, Ascaris, Amphioxus, Tapeworm, ... A. One B. Two C. Three D. Four
Description : Similarity in Ascaris lumbricoides and Anopheles stephensi is
Last Answer : Similarity in Ascaris lumbricoides and Anopheles stephensi is A. Sexual dimorphism B. Metamerism C. Anaerobic respiration D. Endoparastitism
Description : What name is given to the condition of testis in Ascaris ?
Last Answer : What name is given to the condition of testis in Ascaris ? A. Monodelphic B. Didelphic C. Monarchic D. Alarchic .
Description : Which of the infective stage of Ascaris for man ?
Last Answer : Which of the infective stage of Ascaris for man ? A. First larval stage B. Second larval stage ( rhaditifonn larva ) C. Encysted egg D. Adult
Description : The epidermis of Ascaris is
Last Answer : The epidermis of Ascaris is A. Multicellular B. Syncytial C. Clumnar D. Cuboidal
Description : Male Ascaris differs from female in having
Last Answer : Male Ascaris differs from female in having A. Lips B. Amphids C. Pineal spicules D. Tail
Description : Draw a neat and labelled diagram of Ascaris.
Last Answer : Draw a neat and labelled diagram of Ascaris.
Description : Explain the sexual dimorphism in Ascaris.
Last Answer : Explain the sexual dimorphism in Ascaris.
Description : The example of hermaphrodite animal in which cross fertilization occurs is - (1) Hydra (2) Ascaris (3) Earthworm (4) Silkworm
Last Answer : (1) Hydra Explanation: Cross fertilization occurs in Hydra. The spermatozoa released from the testis of one Hydra swim about in water with their tails and finally come into contact with the ovum ... penetrates the ovum and fertilizes it. This results in the formation of a zygote which is diploid.
Description : Conglobate gland is a leaf like structure found in – (1) Female Cockroach (2) Male Cockroach (3) Male Ascaris (4) Female Ascaris
Last Answer : (2) Male Cockroach Explanation: Conglobate gland is a leaf like, median, unbranched gland of male cockroach. It lies below the ejaculatory duct and open into the genital pouch close to the male genital aperture.
Description : Which of the following is a monogenetic parasite? (1) Hydra (2) Fasciola (3) Ascaris (4) Earthworm
Last Answer : (3) Ascaris Explanation: Ascaris is a monogenetic parasite as it completes it life cycle in a single host, i.e., man.
Description : Give a detailed note on Ascaris?
Last Answer : Habitat: - Ascaris is present in man and cattle. Size: - They are larger in size than other nematodes. Nutrition: - They suck the digested food from intestine. Reproduction: - ... are present in greater number than they block the way of intestine which can lead to death.
Description : Pigs or dogs are the source of human infection by each of the following parasites EXCEPT: B A. Echinococcus granulosus B. Ascaris lumbricoides C. Taenia solium D. Trichinella spiralis
Last Answer : Ascaris lumbricoides
Description : Barberpole worm is common name of C A. Trichuris trichura B. Ancylostoma caninum C. Haemonchus contortus D. Ascaris lumbricuides
Last Answer : Haemonchus contortus
Description : Pigs or dogs are the source of human infection by each of the following parasites except C A. Echinococcus granulosus B. Taenia solium C. Ascaris lumbricoides D. None
Description : If all ponds and puddles are destroyed, the organism likely to be destroyed is (a) Leishmania (b) Trypanosoma (c) Ascaris (d) Plasmodium.
Last Answer : (d) Plasmodium.
Description : Infection of Ascaris usually occurs by (a) Tse-tse fly (b) mosquito bite (c) drinking water containing eggs of Ascaris (d) eating imperfectly cooked pork
Last Answer : (c) drinking water containing eggs of Ascaris
Description : Onchosphere occurs in (a) Ascaris (b) Fasciola (c) Taenia (d) Planaria.
Last Answer : (c) Taenia
Description : .Ascaris larva is called (a) cysticercus (b) rhabditiform (c) hexacanth (d) onchosphere
Last Answer : (b) rhabditiform
Description : A larval stage occurs in the life history of all members of the group (a) frog, lizard and cockroach (b) Ascaris, housefly and frog (c) housefly, earthworm and mosquito (d) butterfly, frog and mosquito.
Last Answer : (d) butterfly, frog and mosquito.
Description : Similarity in Ascaris lumbricoides and Anopheles stephensi is (a) sexual dimorphism (b) metamerism (c) anaerobic respiration (d) endoparasitism.
Last Answer : (a) sexual dimorphism
Description : Ascaris is characterized by (a) presence of true coelom but absence of metamerism (b) presence of true coelom and metamerism (metamerisation) (c) absence of true coelom but presence of metamerism (d) presence of neither true coelom nor metamerism.
Last Answer : (d) presence of neither true coelom nor metamerism.
Description : What will you look for to identify the sex of the following? (a) Female Ascaris-sharply curved posterior end (b) Male frog- a copulatory pad on the first digit of the hind limb (c) Female cockroach-anal cerci (d) Male shark-claspers borne on pelvic fins
Last Answer : (d) Male shark-claspers borne on pelvic fins
Description : Which one of the following pairs of animals are similar to each other pertaining to the feature stated against them? (a) Pteropus and - Viviparity Ornithorhynchus (b) Garden lizard and - ... - Metameric Ancylostoma segmentation (d) Sea horse and - Cold blooded flying fish (poikilothermal)
Last Answer : (d) Sea horse and - Cold blooded flying fish
Last Answer : (d) Sea horse and - Cold blooded flying fish (poikilothermal)
Description : Which of the following endoparasites of humans does show viviparity? (a) Trichinella spiralis (b) Ascaris lumbricoides (c) Ancylostoma duodenale (d) Enterobius vermicularis
Last Answer : (a) Trichinella spiralis
Description : Which of the following animals have scattered cells with cell - tissue grade organisation? (a) Sponge (b) Hydra (c) Liver fluke (d) Ascaris
Last Answer : (b) Hydra
Description : The pathogen Microsporum responsible for ringworm disease in humans belongs to the same kingdom of organisms as that of (a) Taenia, a tapeworm (b) Wuchereria, a filarial worm (c) Rhizopus, a mould (d) Ascaris, a round worm.
Last Answer : (c) Rhizopus, a mould