Notochord originates from

• Mesoderm

• Ectoderm

• Endoderm

• None of these

Which is substitution of mitochondria in E. colt?

• Golgi body

• Mesosome

• Ribosome

• Glyoxysomes

Animal cell differ from plant cell in possessing

• Vacuoles

• Centrosomes

• Pastids

• Mitochondria

Which of the following organelles does not contain RNA?

• Plasmalemma

• Ribosome

• Chromosome

• Nucleolus

Dutrochet has given the concept about cell in

• 1834

• 1814

• 1822

• 1824

6.

Which of the given option is correct regarding the statements?

Statement I: Cephalochordata bears notochord all along the body throughout life.

Statements II: Urochordate bears vertebral column only in the tail region throughout the life.

• I wrong, II correct

• I correct, II wrong

• Both I and II are wrong

• Both are correct

In which of the following haemocyanin pigment is found?

•  Lower invertebrates

• Echinodermata

• Insecta

• Annelida

Which of the following cells in earthworm play a role similar to liver in vertebrates?

• Amoebocytes

• Mucocytes

• Chloragogen cells

• Epidermal cells

Match the following and select the correct option.

List I	List II
A. Cyclostomes	1. Hemichordata
B. Ayes	2. Urochordata
C. Tunicates	3. Agantha
D. Balanoglossus	4. Pisces
E. Osteichthyes	5. Tetrapod

• A	B	C	D	E
  3	5	2	1	4

• A	B	C	D	E
  3	1	5	2	4

• A	B	C	D	E
  1	2	3	4	5

• A	B	C	D	E
  2	3	4	1	5

Chondrichthyes is characterised by

• Placoid scale

• Placoid scale and ventral mouth

• Ventral mouth

• Ctenoid scale and ventral mouth