Which of the following is not a feature of birds?

1.	Forelimbs modified into wings
2.	Single occipital condyle
3.	Ten pairs of cranial nerves
4.	Four chambered heart

 

Chordates are not characterized by:

Notochord is derived from embryonic:
1. Ectoderm
2. Mesoderm
3. Endoderm
4. Ectoderm and Mesoderm

Identify the phylum where the body cavity is not lined by mesoderm, instead, the mesoderm is present as scattered pouches between ectoderm and endoderm :
1. Cnidaria
2. Platyhelminthes
3. Mollusca
4. Aschelminthes

Sponges are mostly:

What is present between ectoderm and endoderm in diploblastic animals?
1. Mesenteron
2. Mesenchyme
3. Mesorchium
4. Mesoglea

Mammals are not characterized by:
1. Presence of hair
2. Presence of mammary glands
3. Homodont dentition
4. Endothermy

“Amniotes” do not include:
1. Amphibians
2. Reptiles
3. Birds
4. Mammals

The presence of mutable collagenous tissue is an important feature of:
1. Annelida
2. Echinodermata
3. Porifera
4. Molluska

Closed circulatory system is not seen in: