Triploblastic organism with incomplete gut is
(A) Ctenoplana
(B) Taenia
(C) Asterias
(D) Fasciola

Which of the following statement is incorrect about the phylum Hemichordata ? (A) They are bilaterally symmetrical, triploblastic and coelomate animals. (B) Circulatory system is open type. (C) Excretory organ is proboscis gland (D) Fertilization is internal and development is indirect

(a) Identify figure A to D (b) Which one of them is (i) diploblastic , (ii) triploblastic ? (c) Which triploblastic animal is (i) Acoelomate (ii) Coelomate ? (d) Which one belong to phylum (i) Cnidaria , (ii) Platyhelminthes , (iii) Annelids , (iv) Arthropoda ? (e) Which one of them has (i) Organ level organism , (ii) Organ-system level organisation ? (f) Which one of them has excretory organs in the form of (i) Flame cells , (ii) Nephridia ? (g) Which one of them has trachea as the respiratory organ ?

Which one of the following statements is incorrect? (A) Mesoglea is present in between ectoderm and endoderm in Obelia (B) Asterias exhibits radial symmetry (C) Fasciola is a pseudocoelomate animal (D) Taenia is a triploblastic animal

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.

The organism A, B and C can obtain their food in three different ways. Organsim A derives its food from the body of another living organism which is called its, D without killing it. The organism B takes in the solid food by the process of ingestion, digests a part of this food and throws out undigested food in the process called E. The organism C obtains its food from dead and decaying plants. (a) What is the mode of nutrition of (i) organism A (ii) organism B, and (iii) organism C ? (b) What is the organism like D called ? (c) Name the process E. (d) Give one example each of organisms like (i) A (ii) B, and (iii) C. (e) What is the general name of three modes of nutrition exhibited by organisms A, B and C ?

Match the following organisms with respective characteristics: {:("(a) Pila",,"(i) Flame cells"),("(b) Bombyx",,"(ii) Comb plates"),("(c) Pleurobrachia",,"(iii) Radula"),("(d) Taenia",,"(iv) Malpighian tubules"):}

Identify organisms A,B,C and D in the given food web

(A) Bilateral symmetry (B) Radial symmetry (C) Diploblastic (D) Triploblastic (E) Acoelomate (F) Round body on transverse section Which of given above characters are present in Ascaris?

There are four organisms A, B, C and D. The organism A eats only the flesh of other animals as food. The organism B can eat grains, fruits and vegetables as well as meant and fish. The organism C can make the food itself from simple inorganic substances present in the environment by utilising sunlight energy. On the other hand, organism D eats only plants and their products as food. (a) Which organism is (i) omnivore (ii) herbivore, and (iii) carnivore ? (b) Which organism is an autotroph ? (c) Which organism is/are heterotrophs(s) ? (d) Which organism can be a producer ? (e) Which organism is/are consumer (s)? (f) Give one example each of organisms which could be like (i) A (ii) B (iii) C, and (iv) D