Biology
Assertion (A): An insect's body is divided into three regions - head, thorax and abdomen.
Reason (R): The division of an insect's body in three parts is very suitable for its locomotion as one pair of legs is attached with each body part with proper gap / space.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Answer
A is true but R is false.
Reason — A is true as insect's body is divided into three regions - head, thorax and abdomen.
R is false as insects have three pairs of legs, and all legs are attached only to the thorax, not one pair on each body part. Head and abdomen do not bear legs.
Therefore, A is true but R is false is the correct option.
Related Questions
What is the main distinguishing feature of arachnids ?
- Six legs
- Segmented body
- Nephridia
- Four pairs of legs
Assertion (A): Tapeworm has a long, ribbon-like segmented body that can occur in human intestines as a parasite.
Reason (R): Tapeworm belongs to the phylum annilida (segmented worms). It breathes with the help of moist skin.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Most animals move from one place to another mainly in search of food or shelter but plants do not move.
Reason (R): Animals are heterotrophs whereas plants are autotrophs. Hence, plants are capable of making their own food and do not move from one place to another.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): Tortoises and crocodiles belong to the class - amphibia of the phylum chordata.
Reason (R): They can live in water as well as on the land and reproduce successfully.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.