Animal Kingdom PYQ

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) : All vertebrates are chordates but all chordates are not vertebrate. Reason (R) : The members of subphylum vertebrata possess notochord during the embryonic period, the notochord is replaced by cartilaginous or bony vertebral column in adults. In the light of the above statements, choose the correct answer from the options given below:

While trying to find out the characteristic of a newly found animal, a researcher did the histology of adult animal and observed a cavity with presence of mesodermal tissue towards the body wall but no mesodermal tissue was observed towards the alimentary canal. What could be the possible coelome of that animal?

Which of the following pairs is an incorrect match?

Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: Members of subphylum vertebrata possess notochord during the embryonic period. The notochord is replaced by a cartilaginous or bony vertebral column in the adult. Reason R: Thus all chordates are vertebrates not all vertebrates are chordates. In the light of the above statements choose the correct answer from the option given below.

Open Circulatory system is present in:

Match List-I with List-II. \begin{array}{|l|l|l|l|}\hline & List-I & & List-II \\\hline A. & Chondrichthyes & I. & Clarias \\\hline B. & Cyclostomata & II. & Carcharodon \\\hline C. & Osteichthyes & III. & Myxine \\\hline D. & Amphibia & IV. & Ichthyophis \\\hline\end{array} Choose the correct answer from the options given below:

The following are the statements about non-chordates: A. Pharynx is perforated by gill slits. B. Notochord is absent. C. Central nervous system is dorsal. D. Heart is dorsal if present. E. Post anal tail is absent. Choose the most appropriate answer from the options given below:

Match List I with List II : \begin{array}{|l|l|l|l|}\hline & List I & & List II \\\hline A. & Pleurobrachia & I. & Mollusca \\\hline B. & Radula & II. & Ctenophora \\\hline C. & Stomochord & III. & Osteichthyes \\\hline D. & Air bladder & IV. & Hemichordata \\\hline\end{array} Choose the correct answer from the options given below :

Match List I with List II :  Choose the correct answer from the options given below :

Consider the following statements : A. Annelids are true coelomates B. Poriferans are pseudocoelomates C. Aschelminthes are acoelomates D. Platyhelminthes are pseudocoelomates Choose the correct answer from the options given below :

The unique mammalian characteristics are:

Select the correct statement related to chordates. A. Presence of a mid-dorsal, solid and double nerve cord. B. Presence of closed circulatory system. C. Presence of paired pharyngeal gillislits. D. Presence of dorsal heart E. Triploblastic pseudocoelomate animals. Choose the correct answer from the options given below:

Match List-I with List-II.  Choose the correct answer from the options given below:

Select the correct statements : (A) Platyhelminthes are triploblastic pseudocoelomate and bilaterally symmetrical organisms. (B) Ctenophores reproduce only sexually and fertilization is external. (C) In tapeworm, fertilization is internal but sexes are not separate. (D) Ctenophores are exclusively marine, diploblastic and bioluminescent organisms. (E) In sponges, fertilization is external and development is direct. Choose the correct answer from the options given below :

Radial symmetry is NOT found in adults of phylum ____

Given below are two statements: one is labelled as Assertion and the other is labelled as Reason. Assertion: All vertebrates are chordates, but all chordates are not vertebrates. Reason: Notochord is replaced by a vertebral column in the adult vertebrates. In the light of the above statements, choose the most appropriate answer from the options given below:

In which of the following animals, digestive tract has additional chambers like crop and gizzard?

Select the Incorrect statements with respect to Cyclostomes: (a) They lack scales and paired fins. (b) They have circular mouth with Jaws. (c) They bear 6-15 pairs of gills. (d) They migrate to deep sea for spawning. Choose the most appropriate answer from the options given below:

Exoskeleton of arthropods is composed of:

Match List-I with List-II :  Choose the correct answer from the options given below:

Which one of the following organisms bears hollow and pneumatic long bones?

Match List$-I$ with List$-\mathrm{II}$. <table class="pyq-table"><tbody><tr><td colspan="2" rowspan="1">List$-I$</td><td colspan="2" rowspan="1">List$-\mathrm{II}$</td></tr><tr><td>(a)</td><td>Metamerism</td><td>(i)</td><td>Coelenterata</td></tr><tr><td>(b)</td><td>Canal system</td><td>(ii)</td><td>Ctenophora</td></tr><tr><td>(c)</td><td>Comb plates</td><td>(iii)</td><td>Annelida</td></tr><tr><td>(d)</td><td>Cnidoblasts</td><td>(iv)</td><td>Porifera</td></tr></tbody></table>