MCQ On Dinoflagellates for NEET

MCQ On Dinoflagellates for NEET |MCQ On NEET Biology class 11th |MCQ Questions for class 11 Biology chapter 2 , Dinoflagellates with answer | Check the below NCERT MCQ question for class 11 Biology Chapter 2 based Dinoflagellates with answers.

MCQ Questions for class 11 Biology with Answers were prepared based on the latest pattern. We have provided class 11 Biology MCQs question on Dinoflagellates with answers to help students understand the concept very well.

Dinoflagellates

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Introduction:-

Dinoflagellates are mostly marine and photo Synthetic. They appear yellow, green, brown, blue or red due to change in proportion of various pigments present in their cell. The cell wall has stiff cellulose plates on the outer Surface. Most of them have two flagella ; One lies longitudinally and the other transversely in a furrow between the wall plates. Red dinoflagellates like gonyaulax undergo rapid multiplication and make the sea appear red. Toxine released by Such large numbers may even kill other marine animals such as fishes.

MCQ On Dinoflagellates for NEET 

Here are ten multiple-choice questions (MCQs) about Dinoflagellates along with their answers:

1. What is the primary habitat of dinoflagellates?
a) Freshwater
b) Terrestrial
c) Marine
d) Desert

Answer: c) Marine

2. Dinoflagellates are classified as:
a) Animals
b) Plants
c) Protists
d) Fungi

Answer: c) Protists

3. What is the key feature of dinoflagellates that sets them apart from other protists?
a) Chlorophyll pigment
b) Flagella
c) Cell wall made of cellulose plates
d) Multicellularity

Answer: c) Cell wall made of cellulose plates

4. Dinoflagellates are known for their role in causing:
a) Coral bleaching
b) Fishermen’s luck
c) Soil enrichment
d) Forest fires

Answer: a) Coral bleaching

5. Which of the following is not a common function of dinoflagellates in marine ecosystems?
a) Photosynthesis
b) Bioluminescence
c) Parasitism
d) Nutrient cycling

Answer: c) Parasitism

6. What is the term for the phenomenon in which dinoflagellates undergo rapid population growth and can lead to harmful algal blooms?
a) Algal explosion
b) Red tide
c) Green wave
d) Blue bloom

Answer: b) Red tide

7. Some dinoflagellates are known for producing toxins that can be harmful to marine life and humans. What is this phenomenon called?
a) Bioluminescence
b) Allelopathy
c) Harmful algal blooms (HABs)
d) Phagocytosis

Answer: c) Harmful algal blooms (HABs)

8. Dinoflagellates are an important component of the food web in oceans because they are a primary source of food for:
a) Whales
b) Sharks
c) Krill and other zooplankton
d) Seagulls

Answer: c) Krill and other zooplankton

9. Which of the following statements about dinoflagellates is true?
a) They are all photosynthetic
b) They have a single, whip-like flagellum
c) They are all harmless to marine life
d) They are not involved in nutrient cycling

Answer: b) They have a single, whip-like flagellum

10. Dinoflagellates are a significant source of oxygen production in the world’s oceans. What percentage of Earth’s oxygen do they contribute?
a) 10%
b) 25%
c) 50%
d) 75%

Answer: a) 10%

Conclusion :-

MCQ On Dinoflagellates for NEET | What is the key feature of dinoflagellates that sets them apart from other protists? a) Chlorophyll pigment , b) Flagella , c) Cell wall made of cellulose plates, d) Multicellularity Answer: c) Cell wall made of cellulose plates