Explain how animals in Vertebrata are classified into further subgroups.
[question] Question. Explain how animals in Vertebrata are classified into further subgroups. [/question] [solution] Solution: Animals in Vertebrata are classified into five classes: (i) Class Pisces: This class includes fish such as Scoliodon, tuna, rohu, shark, etc. These animals mostly live in water. Hence, they have special adaptive features such as a streamlined body, presence of a tail for movement, gills, etc. to live in water. (ii) Class Amphibia: It includes frogs, toads, and salamander...
How are the criteria for deciding divisions
[question] Question. How are the criteria for deciding divisions in plants different from the criteria for deciding the subgroups among animals? [/question] [solution] Solution: Criteria for deciding divisions in plants are: (i) Differentiated/Undifferentiated plant body (ii) Presence/ absence of vascular tissues (iii) With/without seeds (iv) Naked seeds/ seeds inside fruits Criteria for decidıng subgroups among animals are: Kingdom Animalia is divided into two major groups on the basis of the p...
What are the major divisions in the Plantae?
[question] Question. What are the major divisions in the Plantae? What is the basis for these divisions? [/question] [solution] Solution: The kingdom Plantae is divided into five main divisions: Thallophyta, Bryophyta, Pteridophyta, Gymnosperms, and Angiosperms. The classification depends on the following criteria:Differentiated/ Undifferentiated plant body Presence /absence of vascular tissues With/ without seeds Naked seeds/ seeds inside fruits (i) The first level of classification depends on ...
Explain the basis for grouping organisms into five kingdoms.
[question] Question. Explain the basis for grouping organisms into five kingdoms. [/question] [solution] Solution: R.H. Whittaker proposed a five kingdom classification of living organisms on the basis of Linnaeus' system of classification. The five kingdoms proposed by Whittaker are Monera, Protista, Fungi, Plantae, and Animalia. The basis for grouping organisms into five kingdoms is as follows: (1) On the basis of the presence or absence of membrane-bound organelles, all living organisms are d...
How would you choose between
[question] Question. How would you choose between two characteristics to be used for developing a hierarchy in classification? [question] [solution] Solution: For developing a hierarchy of classification, we choose the fundamental characteristic among several other characteristics. For example, plants differ from animals in the absence of locomotion, chloroplasts, cell wall, etc. But, only locomotion is considered as the basic or fundamental feature that is used to distinguish between plants and...
What are the advantages of classifying organisms?
[question] Question. What are the advantages of classifying organisms? [question] [solution] Solution: There are a wide range of life forms (about 10 million- 13 million species) around us. These life forms have existed and evolved on the earth over millions of years ago. The huge range of these life forms makes it very difficult to study them one by one. Therefore, we look for similarities among them and classify them into different classes so that we can study these different classes as a whol...
What are the differences between animals belonging
[question] Question. What are the differences between animals belonging to the Aves group and those in the mammalia group? [/question] [solution] Solution: [/solution]...
What are the differences between amphibians and reptiles?
[question] Question. What are the differences between amphibians and reptiles? [question] [solution] Solution: [solution]...
How do annelid animals differ from arthropods?
[question] Question. How do annelid animals differ from arthropods? [question] [solution] Solution: [solution]...
How do poriferan animals differ from coelenterate animals?
[question] Question. How do poriferan animals differ from coelenterate animals? [/question] [solution] Solution: [/solution]...
How do gymnosperms and angiosperms differ from each other?
[question] Question. How do gymnosperms and angiosperms differ from each other? [/question] [solution] Solution: [/solution]...
How are pteridophytes different
[question] Question. How are pteridophytes different from the phanerogams or spermatophytes ? [/question] [solution] Solution: [/solution]...
Which division among plants has the simplest organisms?
[question] Question. Which division among plants has the simplest organisms? [question] [solution] Solution: Thallophyta is the division of plants that has the simplest organisms. This group includes plants, which do not contain a well differentiated plant body. Their body is not differentiated into roots, stems, and leaves. They are commonly known as algae. [/solution]...
In the Hierarchy of classification,
[question] Question. In the hierarchy of classification, which grouping will have the smallest number of organisms with maximum common characteristics in and which will have the largest number of organisms? [question] [solution] Solution: In the hierarchy of classification,a species will have the smallest number of organisms with a maximum of characteristics in common, whereas the kingdom will have the largest number of organisms. [solution]...
In which kingdom will you place an organism which is single-celled,
[question] Question. In which kingdom will you place an organism which is single-celled, eukaryotic and photosynthetic? [question] [solution] Solution: Kingdom Protista includes single celled, eukaryotic, and photosynthetic organisms. [solution]...
What is the criterion for classification
[question] Question. What is the criterion for classification of organisms as belonging to kingdom Monera or Protista? [/question] [solution] Solution: The criterion for the classification of organisms belonging to kingdom Monera or Protista is the presence or absence of a well-defined nucleus or membrane-bound organelles. Kingdom Monera includes organisms that do not have a well-defined nucleus or membrane-bound organelles and these are known as prokaryotes. Kingdom Protista, on the other hand,...
Will advanced organisms be the same as complex organisms? Why?
[question] Question. Will advanced organisms be the same as complex organisms? Why? [/question] [solution] Solution: It is not always true that an advanced organism will have a complex body structure. But, there is a possibility that over the evolutionary time, complexity in body design will increase. Therefore, at times, advanced organisms can be the same as complex organisms. [/solution]...
Which organisms are called primitive
[question] Question. Which organisms are called primitive and how are they different from the so-called advanced organisms? [question] [solution] Solution: A primitive organism or lower organism is the one which has a simple body structure and ancient body design or features that have not changed much over a period of time. An advanced organism or higher organism has a complex body structure and organization which they have acquired relatively recently. For example, an amoeba is more primitive a...
On what basis are plants and animals
[question] Question. On what basis are plants and animals put into different categories? [/question] [solution] Solution: Plants and animals differ in many features such as the absence of chloroplasts, presence of cell wall, etc. But, locomotion is considered as the characteristic feature that separates animals from plants. This is because the absence of locomotion in plants gave rise to many structural changes such as the presence of a cell wall (for protection), the presence of chloroplasts (f...
What is the primary characteristic
[question] Question. What is the primary characteristic on which the broad division of organisms is made? [/question] [solution] Solution: The primary characteristic on which the first division of organisms is made is the nature of the cell. It is considered to be the fundamental characteristic for classifying all living organisms. Nature of the cell includes the presence or absence of membrane-bound organelles. Therefore, on the basis of this fundamental characteristic, we can classify all livi...
Which do you think is a more basic characteristic for classifying organisms?
[question] Question. Which do you think is a more basic characteristic for classifying organisms? (a) The place where they live. (b) The kind of cells they are made of Why? [question] [solution] Solution: The kind of cells that living organisms are made up of is a more basic characteristic for classifying organisms, than on the basis of their habitat. This is because on the basis of the kind of cells, we can classify all living organisms into eukaryotes and prokaryotes. On the other hand, a habi...