Read the following statements :
(a) Over one - third of all named species on earth are arthropods.
(b) All mollusuc contain a file like a rasping organ for feeding.
(c ) Nereis possess parapoida which help in swimming.
(d) Development is indirect in Bufo.
Choose the incorrect statements.

Read the following and choose the incorrect statements. (a) Over one - third of all named species on earth are arthropods. (b) All molluscs contain a rasping organ for feeding. (c ) Nereis possess parapoida which help in swimming. (d) Development is indirect in Bufo.

Fill in the blanks a. In round worm often males are K____than femals (b). Over L_____of all the named species on earth are arthopods. (c). Molluscs contains a file like rasping organ for M_____ called radula.

Read the following staements (A) Protein storage cell organelles are amembraneous. (B) Plastids are found in all photosynthetic organisms. Which of the above statement(s) is /are incorrect.

How many statements are correct for second largest phylum ? (A)Animals of this phylum are terrestrial or only marine (B)The mouth contains a file - like rasping organ for feeding, called radula . (C )They are bilaterally symmetrical and enterocoelomate animals. (D)Animals have only open type of blood vascular system.

How many statements are correct for second largest phylum ? (A)Animals of this phylum are terrestrial or only marine (B)The mouth contains a file - like rasping organ for feeding, called radula . (C )They are bilaterally symmetrical and enterocoelomate animals. (D)Animals have only open type of blood vascular system.

Which of the following statements regarding the estimates of number of species found on earth is not correct ? (a) Total number of species present on earth are considered to be about 7 million as estimated by Robert May. (b) Plants constitute more than 70% of all the species recorded, whereas animals constitute less than 22% of the total number of species. (c) Insects constitute more than 70% of all the animal species. (d) None of these

Which of the following statements regarding the estimates of number of species found on earth is not correct ? (a) Total number of species present on earth are considered to be about 7 million as estimated by Robert May. (b) Plants constitute more than 70% of all the species recorded, whereas animals constitute less than 22% of the total number of species. (c) Insects constitute more than 70% of all the animal species. (d) None of these

In each of the following problems, there if one question and three statements I, II and III given below the question. You have to decide whether the data given in the statements is sufficient to answer the question. Read all the statements carefully and find which of the statements is // are sufficient to answer the given question. Choose the correct alternative in each question. Who is the tallest among A,B,C,D and E ? I. C is taller than B but not as tall as E. II. A is not the shortest. III. A is taller than only D.

Read the following statements. (a) Metagenesis is observed in Helminthes (b) Echinoderms are triploblastic and coelomate animals (c) Roundworms have organ system level of body organization (d) Comb plates present in ctenophore help in digestion (e) Water vascular system is characteristic of Echinoderms. Choose the correct answer from options given below.