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Test: Kingdom Protista (NCERT) - NEET MCQ


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15 Questions MCQ Test Biology Class 11 - Test: Kingdom Protista (NCERT)

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Test: Kingdom Protista (NCERT) - Question 1

Which of the following kingdoms has no well define boundaries?

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 1

Although all single-celled eukaryotes (except some unicellular algae e.g., Chlamydomonas, Chlorella etc., and fungi e.g., Yeasta and animals, which are placed in their respective kingdoms along with their closely related multicellular organisms) are placed in kingdom Protista, yet its boundaries are not well defined.

Test: Kingdom Protista (NCERT) - Question 2

Members of kingdom Protista are primarily

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 2

Protists are mostly aquatic organisms, therefore, they are found in the sea, freshwater and moist soil. Many protists are found in water bodies in the form of plankton. Some protists live in the bodies of animals as parasites

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Test: Kingdom Protista (NCERT) - Question 3

Which of the following organisms have been placed under kingdom Protista?

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 3

The kingdom protista has been  broadly divided into three main groups:
(i) Photosynthetic Protists (Protistan Algae) example, Dinoflagellates, Chrysophytes and Euglenoids
(ii) Consumer-Decomposer Protists(Slime Moulds)
(iii) Protozoan Protists
Euglenoids are Euglena like unicellular flagellates which possess pellicles instead of cell wall. Chrysophytes include diatoms and desmids. They belong to the division Chrysophyta/Bacillariophyta. The dinoflagellates belong to division Pyrrophyta and class Dinophyceae. Slime moulds possess the characters of both animals and fungi and, therefore they are commonly called fungus-animals.

Test: Kingdom Protista (NCERT) - Question 4

The cell wall is composed of two thin overlapping shells which fit together like a soap case, in

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 4

The body of diatoms is covered by a transparent ' siliceous shell (silica deposited in cell wall) known as frustule. The frustule is made of two valves, epitheca and hypotheca. The two valves fit together like a soap box. The frustule possesses very fine markings, pits, pores and ridges.

Test: Kingdom Protista (NCERT) - Question 5

Diatomaceous earth is used for all except

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 5

Diatomite deposits are often accompanied by petroleum fields. Much of the petroleum of today is probably due to decayed bodies of the past diatoms. Diatomite is porous and chemically inert. It is, therefore, used in filtration of sugar, alcohols, oil, syrups and antibiotics. Diatomaceous earth is used to make sound proofrooms. Diatomite is employed as a cleaning agent in tooth pastes and metal polishes.

Test: Kingdom Protista (NCERT) - Question 6

Dinoflagellates are mostly

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 6

Dinoflagellates are a group of about 1,000 species of photosynthetic protists. The dinoflagellates are important components of phytoplankton. Most of them are marine but some occur in fresh water. Some dinoflagellates such as Gymnodinium and Gonyaulax grow in large number in the sea and make the water look red and cause the so called “red tide”.

Test: Kingdom Protista (NCERT) - Question 7

Which of the following statements about Euglena is correct?

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 7

Euglenoids are unicellular flagellate protists commonly found in fresh water ponds, pools and moist mud. They lack cellulose cell wall. The body is covered bv thin and flexible pellicle (= periplast). The pellicle has oblique but parallel stripes called myonemes. The euglenolds have two flagella, usually one long and one short. Though the euglenoids are photosynthetic in the presence of light, when deprived of sunlight they behave like heterotrophs by predating on smaller organisms (holozoic) or feeding on organic remains (saprobic). Such a mode of nutrition is called mixotrophic (i.e., a mix of holophytic + saprobic or holozoic). Photosynthetic pigments of euglenoids are identical to those present in higher plants, e.g. chl a and chl b.

Test: Kingdom Protista (NCERT) - Question 8

A slide under microscope shows following features:
(i) Unicellularity
(ii) Well defined nucleus
(iii) Biflagellate-one flagellum lying longitudinally and the other transversely.
What would you identify it as?

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 8

Dinoflagellates are basically unicellular, motile and biflagellate, golden brown, photosynthetic protists. The two flagella are different (heterokont), one transverse flagellum and other longitudinal flagellum.The longitudinal flagellum is narrow, smooth, directed posteriorly and lies in the sulcys. The transverse flagellum is ribbon-like and lies in the cingulum or annulus. The two types of flagella beat in different directions. A well defined nucleus is present, which has been named as mesokaryon.

Test: Kingdom Protista (NCERT) - Question 9

The multinucleate slimy mass of protoplasm which forms the body of slime moulds is called as

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 9

A free living thalloid body of the acellular slime moulds is called plasmodium. The plasmodium is wall-less mass of multinudeate protoplasm covered by slime. All the nuclei in the plasmodium divide simultaneously. Chlorophyll is always absent. The plasmodium often possesses a number of branched veins. The protoplasm present in the veins shows reversible streaming movement. The veins disappear and reappear as the plasmodium moves about.

Test: Kingdom Protista (NCERT) - Question 10

Slime moulds are

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 10

Slimemoulds do not have chlorophyll. They are surrounded by the plasma membrane only (somatic parts are without cell walls). The slime moulds live usually amongst decaying vegetation. They are quite common on lawns and moist fields. They exhibit wide range of colouration. They have phagotrophic or saprotrophic nutrition. Parasitic forms are not known (Bold et all, 1987). Both asexual and sexual modes of reproduction are found. They produce spores within sporangia. A spore possesses a cell wall of cellulose.

Test: Kingdom Protista (NCERT) - Question 11

Causal organisms of sleeping sickness belong to which of the following groups of protozoan protists?

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 11

Trypanosom a gambiense, causes Gambian sleeping sickness. The parasite is transmitted by blood sucking tse-tse fly, Glossina palpalis. Leishmania donovani cause kala-azar or dum-dum fever (= visceral leishmaniasis). The parasite is transmitted by sandfly, Phlebotomus argentipes and other species. Causal organisms of bloth diseases belong to flagellated protozoans of kingdom Protista.

Test: Kingdom Protista (NCERT) - Question 12

Identify the given figure of a Protozoan protist and select the correct option.
image

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 12

The given protozoan is Trypanosoma gambiense. Trypanosoma gambiense causes sleeping sickness transmitted by Tsetse fly.

Test: Kingdom Protista (NCERT) - Question 13

The Sporozoa are all internal _____ that typically have an infective cyst stage in their life cycle. An example of Sporozoa is the genus ______, which cause malaria.

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 13

All sporozoans are endoparasites. Sexual reproduction takes place through syngamy. Asexual reproduction of through multiple fission. Under unfavourable conditions they form cysts.
Examples: Plasmodium (the malaria] parasite), Monocystis, etc.

Test: Kingdom Protista (NCERT) - Question 14

Which out of the following is a ciliated protozoan?

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 14

Paramoecium is a free living ciliate which is found in fresh water. Most widely distributed species are Paramoecium caudatum and Paramoecium aurelia. The, cilia of the extreme posterior end are longer and form a bunch called caudal tuft.

Test: Kingdom Protista (NCERT) - Question 15

What was Aristotle's contribution to the classification of living organisms?

Detailed Solution for Test: Kingdom Protista (NCERT) - Question 15

Aristotle contributed to the classification of living organisms by using simple morphological characters to categorize plants into trees, shrubs, and herbs. He also divided animals based on whether they had red blood or not. This was an early attempt at a more scientific basis for classification, although it wasn't as comprehensive as later systems.

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