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Name the first part of the endoskeleton to appear in the embryo of the chordates, whether it is skeleton system or notochord?

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Important Questions on Animal Diversity- II (Chordata Phylum)

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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata

Which of the following statements are true for the phylum-Chordata?

(a) In Urochordata, notochord extends from head to tail, and it is present throughout their life.

(b) In Vertebrata, the notochord is present during the embryonic period only.

(c) Central nervous system is dorsal and hollow.

(d) Chordata is divided into 3 subphyla: Hemichordata, Tunicata, and Cephalochordata.

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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Select the option from the following having matching characteristics for the mentioned group without any exception:
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Which one of the following groups of animals is correctly matched with its characteristic feature without any exception?
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Which one is not a correct statement ?
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata

The post anal tail is present in

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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Which one of the following statements is incorrect about the occurrence of notochord?
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Given below are four matchings of an animal and its kind of respiratory organ.
A Silver fish Tracheal System
B Scorpion Book lung
C Sea squirt Pharyngeal gill slits
D Dolphin Skin

The correct matchings are
EASY
Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
One character is given wrongly for phylum Chordata, mark it.
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata

Assign appropriate class/ phylum/ division to the following:

Herdmania-

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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Which one of the following groups of animals is correctly matched with their two characteristic features?
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Which of the following is/are members of Acraniata?
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
To which classes do the following animals belong?
A — Petromyzon, B — Scoliodon, C — Pristis
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Which one of the following groups of animals is correctly matched with its one characteristic feature without even a single exception?
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Which one of the following categories of animals, is correctly described with no single exception in it?
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Animals belonging to Phylum Chordata are fundamentally characterized by the presence of structures noted as A, B, C and D. Identify them and select the correct option.
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Which one of the following categories of animals, is correctly described with no single exception in it?
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
One character is given wrongly for the phylum Chordata. Mark it.
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Crocodile, fish and frog, on one hand, and squirrel and crow, on the other hand, differ in the following:
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Biology>Diversity in the Living World>Animal Diversity- II (Chordata Phylum)>Phylum: Chordata
Which one of the following classes is incorrectly matched with its two general characters?
  Class Characteristics
(i)  Amphibia  Urinary bladder present, fertilization external
(ii)  Chondrichthyes  Air bladder, operculum
(iii)  Cyclostomata  Closed circulation, 6-15 pairs of gill slits
(iv)  Reptiles  Cornified skin, direct development