Four chambered heart with right systemic arch only is present in
- Mammals
- Reptiles
- Birds
- Amphibians
Excretion in Planaria takes place by
- Nephron
- Malpighian tubules
- Protonephridia
- Metanephridia
The body of which is called metamerically segmented
- Annelids
- Cnidarians
- Nematodes
- Sponges
Enteron is the characteristic feature of:
- Phylum Porifera
- Phylum Cnidaria
- Phylum Plathehelminthes
- Phylum Echinodermata
The term menopause means:
- Stop of ova production
- Degeneration of ovaries
- Start of menstruation
- Start of ovulation
Cartilage is a type of which tissue
- Muscular tissues
- Connective tissues
- Nervous tissues
- Epithelial tissues
Irregular striations and involuntary control is related to
- Skeletal muscle cells
- Smooth muscle cells
- Fibroelastic cartilage cell
- Cardiac muscle cells
The cell membrane of muscle cell is:
- Sarcomere
- Sarcoplasm
- Myofibrils
- Sarcolemma
During sliding of actin filaments, ATP is used for
- Shortening of filament
- Cross bridge formation
- Dragging filaments
- Cross bridge breaking
Test cross is made to check the genotype of a trait. Which of the following crosses is a test cross:
- Unknown x AB
- Unknown x TT
- Unknown x tt
- Unknown x At
