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 Biology Questions

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Q:

Which of the following does not occur during Mitosis?

A) spindle formation B) condensation of the chromosomes
C) breakdown of the nuclear membrane D) replication of the DNA
 
Answer & Explanation Answer: D) replication of the DNA

Explanation:

Replication of the DNA does not occur during Mitosis.

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Q:

Meiosis starts with a single diploid cell and produces 4 haploid cells.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

A cell undergo meiosis, and it produces 4 haploid cells from a single diploid cell.


 


Hence, the given statement is true.

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Q:

Select the correct statement about photosynthesis by primary producers.

A) Photosynthetic protists and prokaryotes Carry out the majority of the photosynthesis in aquatic communities. B) Land plants carry out over 80% of the world's photosynthesis.
C) Cyanobacteria carry out more of the world's photosynthesis than protist do. D) All of the above
 
Answer & Explanation Answer: A) Photosynthetic protists and prokaryotes Carry out the majority of the photosynthesis in aquatic communities.

Explanation:
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Q:

Biological control is to check growth of 

A) plants B) animals
C) weeds D) one pest by another
 
Answer & Explanation Answer: D) one pest by another

Explanation:

Biological Control: This method is very effective. One pest is destroyed by another organism. For example the aphids are killed by lady beetle. The prickly pear is eradicted by cochineal insect. Here the advantage is, one does not use harmful chemicals which may get into the host plants.

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Q:

The oval window is connected directly to which passageway?

A) scala tympani B) external auditory meatus
C) scala vestibuli D) pharyngotympanic tube
 
Answer & Explanation Answer: C) scala vestibuli

Explanation:

The oval window is connected directly to scala vestibuli.

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Q:

In which Organelle does Cellular Respiration Occur?

A) Chloroplast B) ATP and NADPH
C) Cytoplasm D) Mitochondria
 
Answer & Explanation Answer: D) Mitochondria

Explanation:

Mitochondria is the Organelle in which Cellular Respiration Occur.

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Q:

Cytoplasm contains all the organelles.

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

Cytoplasm does not contains all the organelles.

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Q:

When is cladistics more useful than linnaean taxonomy?

A) nomenclature B) classification
C) identification D) evolutionary relationship
 
Answer & Explanation Answer: D) evolutionary relationship

Explanation:
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