HSC Science कक्षा ११ - Tamil Nadu Board of Secondary Education Question Bank Solutions

Several statements are given here in reference to cone cells which of the following option indicates all correct statements for cone cells?

Statements 

1. Cone cells are less sensitive in bright light than Rod cells
2. They are responsible for colour vision 
3. Erythropsin is a photo pigment which is sensitive to red colour light
4. They are present in fovea of retina

Which of the following statement concerning the somatic division of the peripheral neural system is incorrect?

Pleasant smell of food urged Ravi to rush into the kitchen. Name the parts of the brain involved in the identification of food and emotional responses to odour.

The choroid plexus secretes cerebrospinal fluid. List the function of it.

What is ANS? Explain the components of ANS.

Which one of the following is not related to vermiculture?

1. Maintains soil fertility 
2. Breakdown of inorganic matter
3. Gives porosity, aeration and moister holding capacity 
4. Degradation of non biodegradable solid waste

Which one of the following is not an endemic species of earthworm?

Write the advantages of vermicomposting.

Foetus development can be observed using ____________.

PET scan uses ____________.

What are the advantages of CT over other imaging techniques?

Explain the working of MRI.

How does a normal EEG appear?

Write the clinical significance of ultrasonogram.

Explain the principle involved in PET scan.

A group of organisms having similar traits of a rank is ______.

Cladogram considers the following characters

Explain the role of Latin and Greek names in Biology.

The excretory cells that are found in platyhelminthes are

In which of the following organisms, self fertilization is seen.