Read the following statements regarding the class-Crinoidea of phylum-Echinodermata.
I,Ciliared ambulaoral grooves are present on the aboral surface.
II.Antedon beloging to this calss has a good power of regeneration.
III.The oral surface bears mouth and cloca.
IV the tube feet lack suckers.
Choos the corrcet ones.

Read the following statements regarding the ciliated epithelium . I. Found only in the lining of the trachea . II cilia are found on the free surface of the cells. III Help in moving particles or mucus in a particular direction over the epithelium. IV Microvilli are found at the free end to increase the surface area of the organ. identify the ones that are correct .

Read the following statements regarding the ciliated epithelium . I. Found only in the lining of the trachea . II cilia are found on the free surface of the cells. III Help in moving particles or mucus in a particular direction over the epithelium. IV Microvilli are found at the free end to increase the surface area of the organ. identify the ones that are correct .

Read the following statements about animal tissue . Identify the true and false ones and select the correct option . I. Adhering junctions along with cementing cell together facilitate the cells to communicate with each other by connecting the plasma II. Compound epithelium covers the moist surface of the buccal cavity. Pharynx and lining of ducts of salivary glands. III. The striated muscle fibre is a thin elongated with point ends and multiple nuclei IV . Cartilage is present in the tip of the nose and between the bodies of adjacent vertebrae.

Read the following statements about animal tissue . Identify the true and false ones and select the correct option . I. Adhering junctions along with cementing cell together facilitate the cells to communicate with each other by connecting the plasma II. Compound epithelium covers the moist surface of the buccal cavity. Pharynx and lining of ducts of salivary glands. III. The striated muscle fibre is a thin elongated with point ends and multiple nuclei IV . Cartilage is present in the tip of the nose and between the bodies of adjacent vertebrae.

Which of the following statements are correct? I.Frenlum is the fold by which tongue is attached to the floor of mouth or oral cavity. II. Lower surface of the tongue has little projection which bears taste buds. III. Pharynx is the common passage for food and air. IV. Sphincter of oddi guards and regulates the opening of stomach into duodenum. V. Colon has three parts as ascending, a transverse and a decreasing part and the latter opens into the rectum

Read of following statements regarding different types of animal tissues and select the incorrect ones. (i) Each fasciculus (or bundle of muscle fibres) is surrounded by an epithelial tissue covering called perimysium (ii) Multi unit smooth muscles are present in ciliary and iris muscles in the eyes and muscles of the walls of large bloood vessels (iii) Columnar epithelium present in gastric glands, intestinal glands, intestinal glands and pancreatic lubules, has a secretory role and is called as glandular epithelium (iv) Epithelial tissue arises only from the ectoderm of embryo and is usually supplied with blood vessels.

Read of following statements regarding different types of animal tissues and select the incorrect ones. (i) Each fasciculus (or bundle of muscle fibres) is surrounded by an epithelial tissue covering called perimysium (ii) Multi unit smooth muscles are present in ciliary and iris muscles in the eyes and muscles of the walls of large bloood vessels (iii) Columnar epithelium present in gastric glands, intestinal glands, intestinal glands and pancreatic lubules, has a secretory role and is called as glandular epithelium (iv) Epithelial tissue arises only from the ectoderm of embryo and is usually supplied with blood vessels.

Read of following statements regarding different types of animal tissues and select the incorrect ones. (i) Each fasciculus (or bundle of muscle fibres) is surrounded by an epithelial tissue covering called perimysium (ii) Multi unit smooth muscles are present in ciliary and iris muscles in the eyes and muscles of the walls of large bloood vessels (iii) Columnar epithelium present in gastric glands, intestinal glands, intestinal glands and pancreatic lubules, has a secretory role and is called as glandular epithelium (iv) Epithelial tissue arises only from the ectoderm of embryo and is usually supplied with blood vessels.

Read the following statements about adaptations in desert plants and select the correct ones. (i) They have a thick cuticle on their leaf surfaces. (ii) They have stomata present in deep sunken pits. (iii) They use CAM pathway for photosynthesis. (iv) They have flattened stems and large sized leaves. (v) Their stomata remain closed during the day.