Question

plz give me answer plzzzzzzzz jitne aap ko aate hai utne ke Answer dedo my dear friend aavachar​

Answer 1

Answer:

1) The advantages of classifying organisms are as follows: (i) Classification facilitates the identification of organisms. (ii) helps to establish the relationship among various groups of organisms. (iii) helps to study the phylogeny and evolutionary history of organisms.

2)For classifying an organism in a hierarchical fashion, the most fundamental and visible character is first taken into consideration. For example- plants differ from animals in having chloroplast and lacking locomotion, lacking a cell wall.

But, only locomotion is considered as the most basic characteristic of classification. After choosing the fundamental, basic characteristic one can further classify the organism on the basis of the first feature chosen.

3) The basis of grouping organisms into five kingdoms was given by Whittaker. They are as follows:

1. Whether the cell is prokaryotic or eukaryotic.

2. Whether the cell is unicellular or multicellular.

3. Whether the cell wall is present or absent.

4. Whether the cell prepares its own food or obtains its food from outside.

4)The kingdom Plantae is divided into five main divisions. The major divisions of Plantae are Thallophyta, Bryophyta, Pteridophyta, Gymnosperms and Angiosperms.

These divisions are based on the following criteria:

• Differentiated/Undifferentiated plant body

• Presence/absence of vascular tissues

• With/ without seeds

• Naked seeds/seeds inside fruits

1. Thallophyta: Simple body design; with no differentiation into root, stem and leaves.

2. Bryophyta: Body is differentiated into stem and leaf-like structures. Vascular system is absent.

3. Pteridophyta: Body is differentiated into root, stem and leaves. Vascular system is present. Reproductive organs are inconspicuous. Seeds are not produced.

4. Gymnosperms: Seeds are naked.

5. Angiosperms: Seeds are covered.

5)Classification of plant is different than the classification of animals. In plants, classification is based on the morphology of the plants (i.e., differentiated or undifferentiated plant body, with or without seeds, naked seeds or seeds inside fruits, etc) whereas in animals, classification is mainly on the basis body design of an animal (i.e., presence or absence of a notochord).

6)Vertebrates are classified further into sub-groups on the basis of simple to complex forms of structures and their functions. Examples. Pisces, amphibia, reptilia, aves and mammals.

1. Pisces: They are aquatic, cold blooded animals. Their heart has two chambers. Their body is covered by scales or plates. They lay eggs and perform respiration through gills. Their endoskeleton is made up of cartilage. e.g. Fishes.

2. Amphibians: They are cold blooded animals and live in both water and land. Respiration is through gills, lungs, skin. They have three chambered heart. e.g. Frogs.

3. Reptiles: They are cold blooded animals. They have three chambered heart and they breathe through lungs. e.g. Snakes.

4. Aves: They are warm blooded animal, oviparous vertebrates covered with feathers. They have a four chambered heart and perform respiration by lungs. e.g. Birds.

5. Mammals: They are warm blooded animal with four chambered heart. They are viviparous and possess characteristics like pinna and hair on skin and canine. e.g. Humans.

I hope it help you....