When an animal has both the characters of male and female, it is called a super female b super male c intersex d gynandromorph. They are found across much of Europe and Asia, staying in water or near the shore. The ceaseless beating of flagella maintains a steady current of water through the canals in the sponge body. Small fragments can grow into a complete sponge. Photoreceptors enable worms to judge the intensity and duration of light. Its body is protected by a shell consisting of a dorsal carpace and ventral plastron. Inside the cyst, the nucleus repeatedly divides to form several daughter nuclei, which arrange themselves near the periphery.
During daytime, they remain inactive and hiding. The kidney of an adult frog is a metanephros b opisthonephros c pronephros d mesonephros. The animals with bilateral symmetry in young stage, and radial pentamerous symmetry in the adult stage, belong to the phylum a annelida b mollusca c cnidaria d echinodermata. In man and mammals, air passes from outside into the lungs through a nasal cavity, larynx, pharynx, trachea, bronchi, alveoli b nasal cavity, larynx, pharynx, trachea, bronchioles, alveoli c nasal cavity, pharynx, larynx, trachea, bronchioles, bronchi, alveoli d nasal cavity, pharynx, larynx, trachea, bronchi, bronchioles, alveoli. . These excrete out nitrogenous wastes from the body in the form of uric acid. Will The Codys Figure Out Lucy Stole Their Money? Which of the following is an example of platyhelminthes? Bud is formed as an outgrowth on the body surface, then detached to form new animal.
It lies below tongue in the floor of mouth and provides surface of attachment to the tongue. It is present only in mammals. It is very active and keeps on visiting on dirty things and eatables as well. All the cavities in a sponge body are intercommunicating, and are collectively referred to as the canal system. The latter gets infection by grazing on leaves and grass blades to which the cysts are attached. A mesonephros develops from the middle part of intermediate mesoderm, posterior to each pronephros soon after its degeneration.
The lower jaw in mammals is made up of a dentary b maxills c angulars d mandible. In option c Planaria and Schistosoma belong to platyhelminthes but Enterobius Pinworm belongs to aschelminthes. It was nice to have the extra space, and a place where the little ones could stretch and play whether using the pool table or just hanging out. Earthworms are easily obtained and are of convenient size for dissections. They lack the specialized stinging cells nematocystsl 1 found in coelenterates. Which is not a true amphibian animal? All the animals belonging to cnidaria e.
The hexacanth, together with all the membranes surrounding it, is known as onchosphere. Aquatic reptiles are ureotelic ammonotelic ureotelic in water ureotelic over land 8. We are looking at staying in a 2 bedroom- does anyone know how many 2 bedrooms the property has? Fire bellied toad is a Amphiuma b Bombina c Necturus d Salamandra. Pterygoid contributes to the postero-ventral margin of orbit of its side. A chordate character is a gills b spiracles c post-anal tail d chitinous exoskeleton.
It is the commonest tapeworm of man with a much greater incidence than that of T. As the eggs are microlecithal so one would expect that first cleavage will produce two equal blastomeres. What is common among silverfish, scorpion, crab and honey bee? It is used as an attachment point for the wing muscles. Mammals and living share all of the following characteristics except a Endothermy b Descent from a common amniotic ancestor c A dorsal, hollow nerve cord d An archosaur common ancestor 9. Baz was in his car with Lucy Carolina Guerra preparing to go pick up Lena Aamya Deva Keroles so the three could begin a life together in Mexico. Biradial symmetry and lack of cnidoblasts are the characteristics of a Hydra and starfish b starfish and sea anemone c Ctenoplana and Beroe d Aurelia and Paramecium Answer and Explanation: 139.
These are fine, long, unbranched, yellowish and blind tubules lying freely in the haemolymph. Their burrows permit penetration of air and moisture in porous soil and their excretory wastes and other secretions also enrich soil by adding nitrogenous matters to the soil. In echinodermates, blood is colourless as it has no respiratory pigment. When sitting, the abdomen of Anopheles is always held at an angle to the surface while that of Culex is held parallel to the surface. Which of the following does not have an open circulatory system? Archaeopteryx is a powerful piece of evidence that shows that birds have evolved from dinosaurs.
The female curls around them for incubation and remains inactive for about 2 weeks. It further leads into two tubes, trachea and oesophagus. Presence of gills in the tadpole of frog indicates that a fish were amphibious in the past b fish evolved from frog-like ancestors c frogs will have gills in future d frogs evolved from gilled ancestors. Exchange of gases occurs in alveoli. And it gave such a feeling of spaciousness to the room! Although the breakdown of tissues takes place in the female reproductive tract at the end of an oestrous cycle, yet there is no menstruation. What is true about Taenia saginata? It is the simplest type of canal system found in sponges. In option a Spongilla and Euplectella belong to porifera but Pennatula the sea pen or sea feather belongs to coelenterata.
They are called thousand leggers because of possession of numerous walking legs. They are attached high on the back, to the anterior or thoracic region of the trunk, and are very powerful when compared with the size and strength of the bird. Pelvic girdle consists of ilium, ischium and pubis. Solenocytes are the main excretory structures in a echinodermates b platyhelminthes c annelids d molluscs. In cockroach, the cuticular lining is spirally thickened forming taenidia which prevents the tracheal tubes from collapsing. Penguin occurs in a Australia b Antarctica c Africa d America Answer and Explanation: 30.
They are totally absent in clitellum. You know your kids best. From the following statements select the wrong one. A kiwi is any of the species of small flightless birds endemic to New Zealand. Scolex bears four strong, rounded, adhesive suckers but lacks hooks. It is being insoluble in water, does not require water for its elimination.