General
✓✗Frogs differ from humans in possessing
- thyroid as well as parathyroid
- paired cerebral hemispheres
- hepatic portal system
- nucleated red blood cells
General
✓✗Frogs belong to the class
- Amphibia of phylum Chordata
- Insecta
- Pisces
- Reptilia
General
✓✗Branching fibres that join to form a contractile network with intercalated discs are found in
- smooth muscle
- skeletal muscle
- neural tissue
- cardiac muscle
General
✓✗A sheath of tough connective tissue encloses
- several bundles of muscle fibres
- blood plasma
- a single neuron
- a single fat cell
General
✓✗Select the correct option with respect to cockroaches.
- The nervous system comprises a dorsal nerve cord and ten pairs of ganglia.
- Males bear short anal styles not present in females.
- Malpighian tubules convert nitrogenous wastes into urea.
- The forewings are tegmina which are used in flight.
General
✓✗Ciliated epithelial cells are required to move particles or mucus in a specific direction. In humans, these cells are mainly present in
- fallopian tubes and pancreatic duct
- Eustachian tube and salivary duct
- bronchioles and fallopian tubes
- bile duct and bronchioles
General
✓✗The salivary duct of cockroach opens at the base of the
- hypopharynx
- mandibles
- labrum
- gizzard
General
✓✗Keratinised stratified squamous epithelium is found in the
- lining of blood vessels
- lining of the buccal cavity
- trachea
- epidermis of skin
General
✓✗In cockroach, respiration takes place through
- a network of tracheae
- gills
- skin only
- lungs
General
✓✗The layer of actively dividing cells of the skin is termed
- stratum malpighii (stratum germinativum)
- stratum corneum
- stratum lucidum
- stratum compactum
General
✓✗Compound epithelium consists of
- only ciliated cells
- only glandular cells
- two or more cell layers
- a single layer of cells
General
✓✗In male cockroach, a characteristic mushroom-shaped gland is present in the
- 6th-7th abdominal segments
- 4th-6th abdominal segments
- 10th segment
- thorax
General
✓✗Blood is a fluid connective tissue. It is the main circulating fluid that helps in
- the transport of various substances
- mechanical support
- storage of fat
- impulse conduction
General
✓✗The digestive system of frog is made up of
- only the alimentary canal
- only the liver
- Malpighian tubules
- the alimentary canal and digestive glands
General
✓✗In water, the skin of frog acts as an aquatic respiratory organ. Dissolved oxygen in water is exchanged through the skin by
- gills
- diffusion
- active transport
- tracheae