Chordates MCQs
Hello students, our today’s topic is ‘Chordates’. The chordates are classified on the basis of notochord presence as we all know. The chordates are bilaterally symmetrical, triploblastic, with organ level organization and closed circulatory system. It is divided into following three subphyla: a) Urochordata, b) Cephalochordate and c) Vertebrata. The notochord is a rod-like structure that is present along with the back of the organism.
The following set of MCQs will help you more.
MCQ.1): A strong and flexible rod-like structure present in the chordates is …………………………………………..
a) Notochord
b) Gills
c) Wings
d) Tail
MCQ.2): Which of the following part is used by the juvenile fishes for the breathing purpose?
a) Notochord
b) Tail
c) Stomach
d) Pharyngeal gill slits
MCQ. 3):The oral hood which is lined with ……………………………………, and in the pharynx helps to generate water current.
a) Nitrate
b) Gills
c) Ammonia
d) Cilia
MCQ.4): The adult body of subphyla Urochordata is covered by ………………………………….
a) Calcium
b) Tunic
c) Epithelium
d) Endoderm
MCQ.5): In the tunicates of Urochordata, ………………………………….. And ……………………………………… are present only in larval stage.
a) Brain
b) Notochord
c) Tail
d) Both b) and c)
MCQ.6): The embryonic notochord is replaced by ………………………………………………in most of the vertebrates.
a) Ventral Heart
b) Gills
c) Wings
d) Vertebral column
MCQ.7):In ascidians when the nerve cord is converted into a single nerve ganglion and pairs of nerves after notochord disappears, this occurs during …………………………………….
a) Ascidian necrosis
b) Ascidian Ganglions
c) Ascidian metamorphosis
d) Ascidian paedomorphosis
MCQ.8): Which of the following displays the basic features of chordates in simple form due to its body transparency?
a) Amphioxus
b) Snake
c) Lizard
d) Golden fish
MCQ.9): The amniotes have eggs with the ………………………….. Membranes that conserves water in dry land habitat.
a) One
b) Two
c) Three
d) Four
MCQ.10): Which of the following chordates are adapted for the flights?
a) Mammals
b) Fishes
c) Birds
d) Reptiles
MCQ.11): Which of following are the major groups of amniotes?
a) Synapsids
b) Sauropsids
c) Both a) and b)
d) None of them
Answer
1) a) Notochord
2) d) Pharyngeal gill slits
3) d) Cilia
4) b) Tunic
5) d) Both b) and c)
6) d) Vertebral column
7) c) Ascidian metamorphosis
8) a) Amphioxus
9) d) Four
10) c) Birds
11) c) Both a) and b)
