How do gymnosperms and angiosperms differ from each other?
These ate differences between Gymnosperm and Angiosperm:
Gymnosperm |
Angiosperm |
1. They produce cones formed of sporophylls. The sporophylls carry male nd female sex organs. 2. The plants bear naked seeds. |
1. They produce flowers which carry male and female sex organs. 2. The seeds develop in an organ which modifies into fruit, i.e., seeds are found covered within a fruit. |
How do annelied animals differ from arthropods?
These are differences between annelied animals and arthropods:
Annelid animals |
Arthropods |
1. They have the true body cavily (coelomic cavity). The coelomic cavity is not blood filled. 2. Body bears lateral appendages for locomotion in the form of chitineous setae or parapodia. 3. Annelids like earthworm and leech do not have chitinous exoskeleton. |
1. The coelomic cavity is blood filled. 2. They have jointed legs for locomotion. 3. They have chitinous exoskeleton. |
How do poriferan animals differ from coelentrate?
Poriferan |
Coelentrate |
1. There are pores called ostia all over the body and a large opening at the top. 2. There canal system for circulating water throughout the body. 3. External skeleton is present. 4. The body design show minimal differentiation. 5. Tentacles are absent. |
1. There is only one opening. 2. There is no water canal system in the body. 3. Skeleton is absent. 4. They show more body design differentiation. 5. Tentacles are present. |
What are the differences between amphibians and reptiles?
These are differences between amphibians and reptiles:
Amphibians |
Reptiles |
1. Animals of this group can live both on land and in water. 2. They lack scales on the body. 3. Their eggs do not have tough covering. 4. They lay their eggs in water. 5. Water is necessary for fertilisation. |
1. Animals can live either on land or in water. 2. They have scales. 3. Their eggs have tough covering. 4. They do not need to lay their eggs in water. 5. Water is not required for fertilisation. |
What are the differences between animals belonging to the Aves group and those in the mammalia group?
Aves |
Mammals |
1. They beak. 2. Their body is covered with feathers. 3. Forelimbs are modified into wings for flight. 4. They lay eggs. 5. They do not have mammary gland to produce milk for young ones. |
1. They do not have beak. 2. Their body is covered with hair. 3. Forelimbs are not modified into wings. 4. They produce live young ones. 5. They have mammary glands to produce milk for young ones. |