1.define aestivation and its different types?compare and study the morphology of frog and cockroach.
2.What are the two types of permanent tisuues.discuss in detail with diagrams.
1.define aestivation and its different types?compare and study the morphology of frog and cockroach.
2.What are the two types of permanent tisuues.discuss in detail with diagrams.
- The mode of arrangement of sepals or petals in floral bud with respect to the other members of the same whorl is known as aestivation. The main types of aestivation are valvate, twisted, imbricate and vexillary.
Cockroach
Frog
Non chordates
Chordates
Arthropod
Vertebrate
Dorso ventrally flat, compressed body which is covered by a hard, chitinous exoskeleton.
The skeleton can be distinguished into an axial skeleton and an appendicular skeleton.
The head is triangular in shape and bears a pair of compound eyes, a pair of antennae, a mouth and a group of appendages collectively known as mouthparts.
The head is triangular in shape and it contains a mouth, a pair of nostrils and retractible eyes.
Direct development.
Indirect development. It has metamorphosis.
The abdomen consists of 10 segments.
The general body cavity -the coelom - gets partitioned into numerous cavities.
The two types of permanent tissues:
- Simple permanent tissues- the constituent cells are similar in their structure.
- Complex permanent tissues- the constituent cells are dissimilar in their structure.
- The mode of arrangement of sepals or petals in floral bud with respect to the other members of the same whorl is known as aestivation. The main types of aestivation are valvate, twisted, imbricate and vexillary.
Cockroach | Frog |
Non chordates | Chordates |
Arthropod | Vertebrate |
Dorso ventrally flat, compressed body which is covered by a hard, chitinous exoskeleton. | The skeleton can be distinguished into an axial skeleton and an appendicular skeleton. |
The head is triangular in shape and bears a pair of compound eyes, a pair of antennae, a mouth and a group of appendages collectively known as mouthparts. | The head is triangular in shape and it contains a mouth, a pair of nostrils and retractible eyes. |
Direct development. | Indirect development. It has metamorphosis. |
The abdomen consists of 10 segments. | The general body cavity -the coelom - gets partitioned into numerous cavities. |
The two types of permanent tissues:
- Simple permanent tissues- the constituent cells are similar in their structure.
- Complex permanent tissues- the constituent cells are dissimilar in their structure.
