biology Question Bank - Sarthaks eConnect

A test cross enable us to:

About genotype Tt select out the incorrect statement:

Which of the following cell directly acts as a megaspore mother cell?

‘jaya’ and ‘Ratna’ are the improved varities of which crop?

Hugo devries gives a term which means “single step large mutation”:

Extracellular fluid

In following diagram which stage of conduction of nerve impulse through nerve is observed?

Which of the following is incorrect about the given graph:

One element is involved in opening and closing of stomata, the other helps to maintain the ribosome structure they are:

Rate of conduction of impulse in conducting system of heart is fastest in:

Sexual reproduction in fungi may occur by means of:

Which of the following enzyme is not involve in isolation of DNA?

Which hormone is mainly not involved in the process of menstrual cycle?

Each ovule is attached to the ...............by means of a thin stalk called..................

Which is a potent force for organic evolution:

Darwin’s finches are best example of adaptive radiation which of the following best describe this adaptive radiation?

Read the following statement carefully and find out the correct answer:

(a) In hypermatropia image is formed behind the retina

(b) In the cataract the introcular pressure increase from 16 mmg

(c) When canal of schlem is blocked then it causes glaucoma

(d) In astigmatism curvature of cornea is changed

How many statements are is not incorrect?

Fill in the blanks with appropriate enzymes that bring the required changes in the following:

(i) Trysinogen `overset{?}{rightarrow}` Trypsin

(ii) Cassein `overset{?}{rightarrow}` Paracassein

(iii) RNA `overset{?}{rightarrow}` Ribonucleotides

(iv) Triglycerides `overset{?}{rightarrow}` Fatty acids + Glycerol

In a plant cell, the diffusion pressure deficit is zero when it is:

At rest which of the following organ recieve highest blood flow per 100 gm tissue:

Examine the figure given below and choose the structure in which asexual buds are produced:

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