(A) The notochord is a long,rod-like support structure (chord $=$ string) that runs along the back of the animal,separating the nervous tissue from th

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It provides a site for muscle attachment for movement.

(A) The notochord is a long,rod-like support structure (chord $=$ string) that runs along the back of the animal,separating the nervous tissue from the gut.It provides a site for muscles to attach,which facilitates ease of movement.

Class 9 Science DIVERSITY IN LIVING ORGANISMS Mix Example - DIVERSITY IN LIVING ORGANISMS

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Protochordates possess a notochord in larval forms. Appraise the use of this feature in these animals.

A
It provides a site for muscle attachment for movement.
B
It acts as a protective covering for the heart.
C
It helps in the digestion of food.
D
It is used for respiration.

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DIVERSITY IN LIVING ORGANISMS

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Mix Example - DIVERSITY IN LIVING ORGANISMS

$(i)$ Draw a neat diagram of Hydra.
$(ii)$ Label mesoglea and gastrovascular cavity.
$(iii)$ Name the group of animals it belongs to.
$(iv)$ Name one species of this group that lives in colonies.

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Mention the problem which is associated with using local names of organisms. How was this resolved? Name the scientist who introduced the above solution.

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Classify the following animals into cold-blooded and warm-blooded categories: Rohu,Scoliodon,Flying lizard,King Cobra,Frog,Salamander,Ostrich,Pigeon,Bat,Crocodile,and Whale.

Easy

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How many chambers are present in the heart of fishes and frogs?

Easy

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Classify the following organisms based on the absence $/$ presence of true coelom,i.e.,acoelomate,pseudocoelomate,and coelomate:
$(a)$ Scorpion
$(b)$ Sea anemone
$(c)$ Ascaris
$(d)$ Earthworm
$(e)$ Wuchereria
$(f)$ Nereis

Medium

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Protochordates possess a notochord in larval forms. Appraise the use of this feature in these animals.

Similar Questions

$(i)$ Draw a neat diagram of Hydra.$(ii)$ Label mesoglea and gastrovascular cavity.$(iii)$ Name the group of animals it belongs to.$(iv)$ Name one species of this group that lives in colonies.

Mention the problem which is associated with using local names of organisms. How was this resolved? Name the scientist who introduced the above solution.

Classify the following animals into cold-blooded and warm-blooded categories: Rohu,Scoliodon,Flying lizard,King Cobra,Frog,Salamander,Ostrich,Pigeon,Bat,Crocodile,and Whale.

How many chambers are present in the heart of fishes and frogs?

Classify the following organisms based on the absence $/$ presence of true coelom,i.e.,acoelomate,pseudocoelomate,and coelomate:$(a)$ Scorpion$(b)$ Sea anemone$(c)$ Ascaris$(d)$ Earthworm$(e)$ Wuchereria$(f)$ Nereis

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$(i)$ Draw a neat diagram of Hydra.
$(ii)$ Label mesoglea and gastrovascular cavity.
$(iii)$ Name the group of animals it belongs to.
$(iv)$ Name one species of this group that lives in colonies.

Classify the following organisms based on the absence $/$ presence of true coelom,i.e.,acoelomate,pseudocoelomate,and coelomate:
$(a)$ Scorpion
$(b)$ Sea anemone
$(c)$ Ascaris
$(d)$ Earthworm
$(e)$ Wuchereria
$(f)$ Nereis