Which of the following pairs are correctly matched? (i) Crocodile & 4 chambered heart (ii) Sea urchin & Parapodia (iii) Obelia & Metagenesis (iv) Lemur & Thecodont
Correct answer: D. (i), (iii) and (iv)
- A. (ii), (iii) and (iv)
- B. Only (i) and (iv)
- C. Only (i) and (ii)
- D. (i), (iii) and (iv)
Explanation
Reptiles have two auricles and a partly divided ventricle except crocodiles which have a four chambered heart. Obelia shows metagenesis i.e., alternation of generations which may be defined as a phenomenon in which diploid asexual phase alternates with haploid sexual phase. Lemur has thecodont teeth i.e., the teeth are embedded in the sockets of the jaw bone.
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About Kingdom Animalia
Animals are multicellular, heterotrophic eukaryotes whose cells lack cell walls and chloroplasts, with specialised tissues in most groups. Coverage includes body symmetry, tissue layers, coelom, segmentation and levels of organisation, plus major phyla such as Porifera, Cnidaria, Platyhelminthes, Annelida, Arthropoda, Mollusca and Chordata.
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