1st year biology Chapter 7 The Kingdom Proctoctista Question an Answers

Short and Simple Question an Answer

Q1: Why we say that Ulva has isomorphic alternation of generation?

Ans: Because Ulva has the sporophyte and gametophyte in similar morphology.

Q2: Why Euglena is considered as an animal as well as plant like protoctist?

Ans: It is considered as animal as well as plant like protoctist because it has chlorophyll which is the characteristic of plants and it has no cell wall and motile these are the characteristics of animals.

Q3: How Slime molds form a special group of organisms?

Ans: Slime molds form a special group of organisms because these are animal like in their body and plant like in their reproduction.

Q4: Why Chlorella is used in physiological experiments?

Ans: Chlorella is used in physiological experiments because it is easily cultured and used in the research on photosynthesis and respiration.

Q5: Why class Mastigophora is known as Flagellata?

Ans: The class Mastigophora is known as Flagellata because they possess flagella on their outer surface of body.

Q6: How colonial protozoan can be distinguished from a multicellular animal?

Ans: Colonial protozoan can be distinguished from multicellular organisms due to their cell size and their cells are not specialized for any function.

Q7: On what basis protozoa are classified into five classes?

Ans: They are divided into five classes on the basis of their mode of locomotion.

Q8: Why female mosquito bite causes the malaria not male mosquito?

Ans: Only female mosquito bite causes the malaria because it contains malarial parasite in its salivary glands while male mosquito does not contain it.

Q9: What causes the shivering in malaria?

Ans: The simultaneous bursting of millions of red blood cells causes shivering in malaria.

Q10: Why biologists regarded proctist kingdom as a prophylactic group of organisms?

Ans: Because they are found in great diversity and these organisms do not have their common ancestor.