NCERT Class-9 Science Solutions: Chapter 7-Diversity In Living Organisms Part 7

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Question 39:

Match items of column (A) with items of column (B)

Match Items of Column (A) with Items of Column (B). (Q)
Match items of column (A) with items of column (B). (Q)

Column (A)

Column (B)

A.

Pore bearing animals

a.

Arthropoda

B.

Diploblastic

b.

Coelenterata

C.

Metameric segmentation

c.

Porifera

D.

Jointed legs

d.

Echinodermata

E.

Soft bodied animals

e.

Mollusca

F.

Spiny skinned animals

f.

Annelida

Answer:

Match Items of Column (A) with Items of Column (B). (A)
Match items of column (A) with items of column (B). (A)

Column (A)

Column (B)

A.

Pore bearing animals

c.

Porifera

B.

Diploblastic

b.

Coelenterata

C.

Metameric segmentation

f.

Annelida

D.

Jointed legs

a.

Arthropoda

E.

Soft bodied animals

e.

Mollusca

F.

Spiny skinned animals

d.

Echinodermata

Question 40:

Classify the following organisms based on the absence/presence of true coelom (i.e., acoelomate, pseudo coelomate and coelomate)

Spongilla, Sea anemone, Planaria, Liver fluke

Wuchereria, Ascaris, Nereis, Earthworm,

Scorpion, Birds, Fishes, Horse.

Answer:

  • Spongilla - Acoelomate

  • Sea anemone - Acoelomate

  • Planaria - Acoelomate

  • Liver fluke - Acoelomate

  • Wuchereria - Pseudocoelomate

  • Ascaris - Psudocoelomate

  • Nereis - Coelomate

  • Scorpion - Coelomate

  • Earthworm - Coelomate

  • Birds, Fishes and Horse - Coelomate

    Image Acoelomate, Psudocoelomate, Coelomate

    Image Acoelomate, Psudocoelomate, Coelomate

    Image Acoelomate, Psudocoelomate, Coelomate

Question 41:

Endoskeleton of fishes are made up of cartilage and bone; classify the following fishes as cartilaginous or bony

Torpedo, Stingray, Dogfish,

Rohu, Angler fish, Exocoetus.

Answer:

  • Torpedo - Cartilagenous

  • Sting ray - Cartilagenous

  • Dog fish - Cartilagenous

  • Rohu - Bony

  • Angler fish - Cartilagenous

  • Exocoetus - bony

Image Cartilagenous and bony

Image Cartilagenous and Bony

Image Cartilagenous and bony

Question 42:

Classify the following based on number of chambers in their heart.

Rohu, Scoliodon, Frog, Salamander, Flying lizard, King Cobra, Crocodile, Ostrich, Pigeon, Bat, Whale

Answer:

Rohu, Scoliodon - 2 chambered.

Frog, Salamander, Flying lizard, King Cobra - 3 chambered.

Crocodile, Ostrich, Pigeon, Bat, Whale - 4 chambered.