C Eusthenopteron is connecting link between fishes and Amphibians. Eusthenopteron was first discovered in miguasha, Quebec and was described by 'J.F. Whiteaves'. - Eusthenopteron was a 'Devonian fossil' fish on the direct line towards the early amphibian - It was an elongated, carnivorous fish characterized by advanced nature of vertebrate and strong notochord.
CMC Vellore-2013
Animal kingdom
261722
Body cavity of Hydra is called:
1 haemocoel
2 coelenterons
3 enterocoel
4 pseudocoel
Explanation:
B Body cavity of hydra is called coelenterons, it is also known as gastrovascular cavity which takes the food and excretes the waste from the same opening.
J and K CET-2003
Animal kingdom
261723
The body of Rohu fish is covered by
1 Cycloid scale, but the tail of homocercal
2 Placoid scale, but the tail of heterocercal
3 Cycloid scale, but the tail of heterocercal
4 Ptecoid scale, but the tail is homocercal
Explanation:
A Rohu is a teleost fish and has a body covered with cycloid scale but the tail of homocercal. These scales have smooth outer margin and are uniform with the smooth texture. Grooves appear in the tail which are called homocercal. Scales provide protection to the fish from predators and also helps in locomotion.
WB JEE-2014
Animal kingdom
261724
An example of endomycorrhiza is
1 Rhizobium
2 Nostoc
3 Glomus
4 Agaricus
Explanation:
C The genus glomus form endomycorrhiza, a symbiotic associations with plants. The fungal symbiont in these associations absorbs phosphorus from soil and passes it to the plant. Plants having such associations show other benefits also, such as resistance to root-borne pathogens, tolerance to salinity and drought, and an overall increase in plant growth and development.
C Eusthenopteron is connecting link between fishes and Amphibians. Eusthenopteron was first discovered in miguasha, Quebec and was described by 'J.F. Whiteaves'. - Eusthenopteron was a 'Devonian fossil' fish on the direct line towards the early amphibian - It was an elongated, carnivorous fish characterized by advanced nature of vertebrate and strong notochord.
CMC Vellore-2013
Animal kingdom
261722
Body cavity of Hydra is called:
1 haemocoel
2 coelenterons
3 enterocoel
4 pseudocoel
Explanation:
B Body cavity of hydra is called coelenterons, it is also known as gastrovascular cavity which takes the food and excretes the waste from the same opening.
J and K CET-2003
Animal kingdom
261723
The body of Rohu fish is covered by
1 Cycloid scale, but the tail of homocercal
2 Placoid scale, but the tail of heterocercal
3 Cycloid scale, but the tail of heterocercal
4 Ptecoid scale, but the tail is homocercal
Explanation:
A Rohu is a teleost fish and has a body covered with cycloid scale but the tail of homocercal. These scales have smooth outer margin and are uniform with the smooth texture. Grooves appear in the tail which are called homocercal. Scales provide protection to the fish from predators and also helps in locomotion.
WB JEE-2014
Animal kingdom
261724
An example of endomycorrhiza is
1 Rhizobium
2 Nostoc
3 Glomus
4 Agaricus
Explanation:
C The genus glomus form endomycorrhiza, a symbiotic associations with plants. The fungal symbiont in these associations absorbs phosphorus from soil and passes it to the plant. Plants having such associations show other benefits also, such as resistance to root-borne pathogens, tolerance to salinity and drought, and an overall increase in plant growth and development.
C Eusthenopteron is connecting link between fishes and Amphibians. Eusthenopteron was first discovered in miguasha, Quebec and was described by 'J.F. Whiteaves'. - Eusthenopteron was a 'Devonian fossil' fish on the direct line towards the early amphibian - It was an elongated, carnivorous fish characterized by advanced nature of vertebrate and strong notochord.
CMC Vellore-2013
Animal kingdom
261722
Body cavity of Hydra is called:
1 haemocoel
2 coelenterons
3 enterocoel
4 pseudocoel
Explanation:
B Body cavity of hydra is called coelenterons, it is also known as gastrovascular cavity which takes the food and excretes the waste from the same opening.
J and K CET-2003
Animal kingdom
261723
The body of Rohu fish is covered by
1 Cycloid scale, but the tail of homocercal
2 Placoid scale, but the tail of heterocercal
3 Cycloid scale, but the tail of heterocercal
4 Ptecoid scale, but the tail is homocercal
Explanation:
A Rohu is a teleost fish and has a body covered with cycloid scale but the tail of homocercal. These scales have smooth outer margin and are uniform with the smooth texture. Grooves appear in the tail which are called homocercal. Scales provide protection to the fish from predators and also helps in locomotion.
WB JEE-2014
Animal kingdom
261724
An example of endomycorrhiza is
1 Rhizobium
2 Nostoc
3 Glomus
4 Agaricus
Explanation:
C The genus glomus form endomycorrhiza, a symbiotic associations with plants. The fungal symbiont in these associations absorbs phosphorus from soil and passes it to the plant. Plants having such associations show other benefits also, such as resistance to root-borne pathogens, tolerance to salinity and drought, and an overall increase in plant growth and development.
C Eusthenopteron is connecting link between fishes and Amphibians. Eusthenopteron was first discovered in miguasha, Quebec and was described by 'J.F. Whiteaves'. - Eusthenopteron was a 'Devonian fossil' fish on the direct line towards the early amphibian - It was an elongated, carnivorous fish characterized by advanced nature of vertebrate and strong notochord.
CMC Vellore-2013
Animal kingdom
261722
Body cavity of Hydra is called:
1 haemocoel
2 coelenterons
3 enterocoel
4 pseudocoel
Explanation:
B Body cavity of hydra is called coelenterons, it is also known as gastrovascular cavity which takes the food and excretes the waste from the same opening.
J and K CET-2003
Animal kingdom
261723
The body of Rohu fish is covered by
1 Cycloid scale, but the tail of homocercal
2 Placoid scale, but the tail of heterocercal
3 Cycloid scale, but the tail of heterocercal
4 Ptecoid scale, but the tail is homocercal
Explanation:
A Rohu is a teleost fish and has a body covered with cycloid scale but the tail of homocercal. These scales have smooth outer margin and are uniform with the smooth texture. Grooves appear in the tail which are called homocercal. Scales provide protection to the fish from predators and also helps in locomotion.
WB JEE-2014
Animal kingdom
261724
An example of endomycorrhiza is
1 Rhizobium
2 Nostoc
3 Glomus
4 Agaricus
Explanation:
C The genus glomus form endomycorrhiza, a symbiotic associations with plants. The fungal symbiont in these associations absorbs phosphorus from soil and passes it to the plant. Plants having such associations show other benefits also, such as resistance to root-borne pathogens, tolerance to salinity and drought, and an overall increase in plant growth and development.
