Question

1. Assertion (A): Unisexual flowers have separate male and female flowers.Reason (R): Cucumber, pumpkin and watermelon are example of unisexual flowers.2. Assertion (A): Units which make up the nervous system are called neurons.Reason (R): Nerve impulses are carried by dendrites towards the cell body.3. Assertion (A): Refractive index of glass with respect to air is different for red light and violet light.Reason (R): Refractive index of a pair of media depends on the wavelength of light used.​

Answer 1

Answer:

1. A and R are true but R is not the correct explanation of A

2. A and R are true but R is not the correct explanation of A

3. A and R are true and R is the correct explanation of A

Answer 2

Assertion (A): Unisexual flowers have separate male and female flowers.Reason (R): Cucumber, pumpkin and watermelon are example of unisexual flowers.2. Assertion (A): Units which make up the nervous system are called neurons.Reason (R): Nerve impulses are carried by dendrites towards the cell body.3. Assertion (A): Refractive index of glass with respect to air is different for red light and violet light.Reason (R): Refractive index of a pair of media depends on the wavelength of light used.​

Explanation:

1. Both A and R are correct but R as a reason is incorrect

Unisexual flowers

The flowers that either act as male or a female because either they have stamens or they have ovary .

for example : Cucumber, pumpkin and watermelon are example of unisexual flowers

2.Both A and R are correct but R as a reason is incorrect

Neuron

The neuron is a longest cell of our body and  neuron is formed of cell body , axon and dendrites .The function of dendrites to take the message and pass it to another neuron via cell body --> axon --> nerve endings--> another neuron .

3. A and R are correct and R is the reason behind the it .

Refractive index

It is the Ratio of speed of light in medium 1 to medium 2 or ratio of speed of light in vacuum to medium .

It has no units .