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Read the following statements. (NEET 2021)
(a) Metagenesis is observed in Helminths.
(b) Echinoderms are triploblastic and coelomate animals.
(c) Round worms have organ-system level of body organization
(d) Comb plates present in ctenophores help in digestion.
(e) Water vascular system is characteristic of Echinoderms.
Choose the correct answer from the options given below.
Hence, the correct option is B.
NCERT Reference: Refer topics “4.2.2 Phylum – Coelenterata (Cnidaria)”, “4.2.3 Phylum – Ctenophora”, “4.2.5 Phylum – Aschelminthes” and “4.2.9 Phylum – Echinodermata”
Bilaterally symmetrical and acoelomate animals are exemplified by : [NEET 2020]
Hence, the correct option is D.
NCERT Reference: Page no. 51 of topic “4.2.4 Phylum – Platyhelminthes” of chapter 4.
Consider the following features. [NEET 2019]
(A) Organ system level of organisation
(B) Bilateral symmetry
(C) True coelomates with segmentation of body
Select the correct option of animal groups which possess all the above characteristics.
Hence, the correct option is B.
NCERT Reference: Refer topics “4.2.6 Phylum – Annelida”, “4.2.7 Phylum – Arthropoda” and “4.2.11 Phylum – Chordata” of chapter 4.
Which of the following animals does not undergo metamorphosis? [NEET 2018]
Hence, the correct option is A.
NCERT Reference: Page no. 56 of topic “4.2.11.1 Class – Cyclostomata” of chapter 4.
Which one of the following characteristics is not shared by birds and mammals ? [2016]
Hence, the correct option is C.
NCERT Reference: Refer topic “4.2.11.6 Class – Aves” and “4.2.11.7 Class – Mammalia” of chapter 4.
Which of the following characteristic feature always holds true for the corresponding group of animals? [2016]
Hence, the correct option is A
NCERT Reference: Page no. 56 of topic “4.2.11.2 Class – Chondrichthyes” of chapter 4.
Body having meshwork of cell, internal cavities lined with food filtering flagellated cells and indirect development are the characteristics of phylum ______. [2015 RS]
Hence, the correct option is A
NCERT Reference: Pge no. 49 of topic “4.2.1 Phylum – Porifera” of chapter 4.
A jawless fish, which lays eggs in fresh water and whose ammocoetes larvae after metamorphosis return to the ocean is: [2015 RS]
Hence, the correct option is C
NCERT Reference: Page no. 56 of topic “4.2.11.1 Class – Cyclostomata” of chapter 4.
Which of the following animals is not viviparous? [2015 RS]
Hence, the correct option is B.
NCERT Reference: Page no. 60 of topic “4.2.11.7 Class – Mammalia” of chapter 4.
Select the Taxon mentioned that represents both marine and freshwater species: [2014]
So the correct answer is 'Cnidaria'.
Hence, the correct option is D.
NCERT Reference: Page no. 50 of topic “4.2.2 Phylum – Coelenterata (Cnidaria)” of chapter 4,
Which one of the following living organisms completely lacks a cell wall? [2014]
Hence, the correct option is B.
NCERT Reference: Page no. 50 of topic “4.2.2 Phylum – Coelenterata (Cnidaria)” of chapter 4.
Planaria possesses high capacity of: [2014]
Hence, the correct option is B.
NCERT Reference: Page no. 51 of topic “4.2.4 Phylum – Platyhelminthes” of chapter 4.
A marine cartilaginous fish that can produce electric current is: [2014]
Hence, the correct option is B.
NCERT Reference: Page no. 57 of topic “4.2.11.2 Class – Chondrichthyes” of chapter 4.
Which of the following represents the correct combination without any exception?
Hence, the correct option is A.
NCERT Reference: Page no. 56 of topic “4.2.11.2 Class – Chondrichthyes” of chapter 4.
Which of the following features is not present in the phylum - Arthropoda?
Hence, the correct option is C
NCERT Reference: Page no. 52 of topic “4.2.6 Phylum – Annelida” of chapter 4.
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