The criteria (norms) for deciding divisions in plants are different from the criteria for deciding the sub- groups among animals because the basic designs of their body is different. This is mainly due to the fact that plants are autotrophic and often remain fixed to substratum, while animals are heRead more
The criteria (norms) for deciding divisions in plants are different from the criteria for deciding the sub- groups among animals because the basic designs of their body is different. This is mainly due to the fact that plants are autotrophic and often remain fixed to substratum, while animals are heterotrophic and they can move. Thus, the body design of the two groups is based on the need to make their own food in case of plants and to acquire it from external source in case of animals. The other characteristics such as Presence or absence of skeleton, etc., are used to make subgroups among animals.
The major characteristics used to classify animals in Vertebrata are: 1. The kind of exoskeleton or endoskeleton. 2. The kind of respiratory organs. 3. The method of reproduction and giving birth to young ones. On the basis of above mentioned characters the vertebrata is divided into following classRead more
The major characteristics used to classify animals in Vertebrata are: 1. The kind of exoskeleton or endoskeleton. 2. The kind of respiratory organs. 3. The method of reproduction and giving birth to young ones. On the basis of above mentioned characters the vertebrata is divided into following classes.
1 Exoskeleton of scales: Endoskeleton of cartilage or bones; breathing through gills – pisces (fishes).
2. Breathing through gills only in larva ; skin slimy – Amphibia
3. Exoskeleton of scales or scutes ;laying eggs outside the water – Reptilia.
4. Exoskeieton of feathers; lays eggs ; flight possible – Aves (birds).
5. Exoskeleton of hair; external ears, ; give birth to young ones – Mammalia.
The criteria (norms) for deciding divisions in plants are different from the criteria for deciding the sub- groups among animals because the basic designs of their body is different. This is mainly due to the fact that plants are autotrophic and often remain fixed to substratum, while animals are heRead more
The criteria (norms) for deciding divisions in plants are different from the criteria for deciding the sub- groups among animals because the basic designs of their body is different. This is mainly due to the fact that plants are autotrophic and often remain fixed to substratum, while animals are heterotrophic and they can move. Thus, the body design of the two groups is based on the need to make their own food in case of plants and to acquire it from external source in case of animals. The other characteristics such as Presence or absence of skeleton, etc., are used to make subgroups among animals.
Kingdom Plantae includes the following five divisions: 1. Thallophyta (Algae);2. Bryophyta;3. pteridophyta; 4. Gvmnospermae; 5. Angiospermae. The first level of classification of plants is based on the presence and absence of well - differentiated distinct components in the body. Algae are separatedRead more
Kingdom Plantae includes the following five divisions: 1. Thallophyta (Algae);2. Bryophyta;3. pteridophyta;
4. Gvmnospermae; 5. Angiospermae.
The first level of classification of plants is based on the presence and absence of well – differentiated distinct components in the body. Algae are separated from rest of the plants in having simple and less differentiated thalloid plant body. The next level of classification is based on the presence and absence of vascular tissues (i.e., xylem and phloem). This character separates the bryophyta from the rest of the plants. Further classification is based on the ability to bear seeds. Pteridophytes do not bear seeds. Finality, the groups are formed on the basis of seeds naked or enclosed within fruits. The gymnosperms have naked seeds whereas Angiosperms bear seeds enclosed within the fruits.
Give one example of each (i) Asymmetry, radial symmetry and bilateral symmetry; (ii) Acoelomate, pseudocoelomate and haemocoelomate.
(i) Amoeba,Hydra and Frog. (ii) Platyhelminths (flatworms), Nematodes (round worms) and Arthropods (crab).
(i) Amoeba,Hydra and Frog.
See less(ii) Platyhelminths (flatworms), Nematodes (round worms) and Arthropods (crab).
How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?
The criteria (norms) for deciding divisions in plants are different from the criteria for deciding the sub- groups among animals because the basic designs of their body is different. This is mainly due to the fact that plants are autotrophic and often remain fixed to substratum, while animals are heRead more
The criteria (norms) for deciding divisions in plants are different from the criteria for deciding the sub- groups among animals because the basic designs of their body is different. This is mainly due to the fact that plants are autotrophic and often remain fixed to substratum, while animals are heterotrophic and they can move. Thus, the body design of the two groups is based on the need to make their own food in case of plants and to acquire it from external source in case of animals. The other characteristics such as Presence or absence of skeleton, etc., are used to make subgroups among animals.
See lessExplain how animals in Vertebrata are classified into further subgroups?
The major characteristics used to classify animals in Vertebrata are: 1. The kind of exoskeleton or endoskeleton. 2. The kind of respiratory organs. 3. The method of reproduction and giving birth to young ones. On the basis of above mentioned characters the vertebrata is divided into following classRead more
The major characteristics used to classify animals in Vertebrata are: 1. The kind of exoskeleton or endoskeleton. 2. The kind of respiratory organs. 3. The method of reproduction and giving birth to young ones. On the basis of above mentioned characters the vertebrata is divided into following classes.
See less1 Exoskeleton of scales: Endoskeleton of cartilage or bones; breathing through gills – pisces (fishes).
2. Breathing through gills only in larva ; skin slimy – Amphibia
3. Exoskeleton of scales or scutes ;laying eggs outside the water – Reptilia.
4. Exoskeieton of feathers; lays eggs ; flight possible – Aves (birds).
5. Exoskeleton of hair; external ears, ; give birth to young ones – Mammalia.
How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals?
The criteria (norms) for deciding divisions in plants are different from the criteria for deciding the sub- groups among animals because the basic designs of their body is different. This is mainly due to the fact that plants are autotrophic and often remain fixed to substratum, while animals are heRead more
The criteria (norms) for deciding divisions in plants are different from the criteria for deciding the sub- groups among animals because the basic designs of their body is different. This is mainly due to the fact that plants are autotrophic and often remain fixed to substratum, while animals are heterotrophic and they can move. Thus, the body design of the two groups is based on the need to make their own food in case of plants and to acquire it from external source in case of animals. The other characteristics such as Presence or absence of skeleton, etc., are used to make subgroups among animals.
See lessWhat are the major divisions in the Plantae? What is the basis for these divisions?
Kingdom Plantae includes the following five divisions: 1. Thallophyta (Algae);2. Bryophyta;3. pteridophyta; 4. Gvmnospermae; 5. Angiospermae. The first level of classification of plants is based on the presence and absence of well - differentiated distinct components in the body. Algae are separatedRead more
Kingdom Plantae includes the following five divisions: 1. Thallophyta (Algae);2. Bryophyta;3. pteridophyta;
See less4. Gvmnospermae; 5. Angiospermae.
The first level of classification of plants is based on the presence and absence of well – differentiated distinct components in the body. Algae are separated from rest of the plants in having simple and less differentiated thalloid plant body. The next level of classification is based on the presence and absence of vascular tissues (i.e., xylem and phloem). This character separates the bryophyta from the rest of the plants. Further classification is based on the ability to bear seeds. Pteridophytes do not bear seeds. Finality, the groups are formed on the basis of seeds naked or enclosed within fruits. The gymnosperms have naked seeds whereas Angiosperms bear seeds enclosed within the fruits.