Choose the correct order for the cloning process.

1. The production of cDNA is carried out using an enzyme termed Reverse transcriptase.

2. mRNA cannot be used directly in cloning.

3. It is possible to synthesis complementary DNA molecule to all the mRNA from the selected tissue.

4. The cDNA may be inserted into vectors and then cloned.

TLS Online TPP Program

#Question id: 40158

#Botany

Q. Identify the correct statements regarding the structure of DNA:

(A). The two chains have anti-parallel polarity 

(B). The backbone is constituted by sugar-phosphate 

(C). Adenine pairs with Thymine through three hydrogen bonds 

(D). The pitch of the helix is 3.4 nm

Choose the correct answer from the options given below:

TLS Online TPP Program

#Question id: 40159

#Botany

Q. Which of the following are true regarding ecological pyramids?

(A). The pyramid of energy is always upright 

(B). The pyramid of biomass in a sea is generally inverted 

(C). The pyramid of number in a tree ecosystem is inverted

 (D). Saprophytes are given a specific place in ecological pyramids

Choose the correct answer from the options given below:

TLS Online TPP Program

#Question id: 40160

#Environmental Science

Q. Which of the following are true regarding ecological pyramids?

(A). The pyramid of energy is always upright 

(B). The pyramid of biomass in a sea is generally inverted 

(C). The pyramid of number in a tree ecosystem is inverted

 (D). Saprophytes are given a specific place in ecological pyramids

Choose the correct answer from the options given below:

TLS Online TPP Program

#Question id: 40161

#Botany

Q. Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).

Assertion (A): C4 plants are photosynthetically more efficient than C3 plants.

Reason (R): C4 plants lack the process of photorespiration due to the concentration of CO₂ at the enzyme site (RuBisCO).

In light of the above statements, choose the correct answer from the options given below:

TLS Online TPP Program

#Question id: 40162

#Botany

Q. Given below are two statements, one is labelled as Assertion (A) and other one labelled as Reason (R).

Assertion (A): In angiosperms, the endosperm is triploid (3n).

Reason (R): It is formed by the fusion of one male gamete with the egg cell.

In light of the above statements, choose the correct answer from the options given below:

TLS Online TPP Program

#Question id: 40163

#Botany

Match List I with List II

LIST I (Causal Organism)	LIST II (Disease)
A. Phytophthora infestans	I. White Rust of Crucifers
B. Puccinia graminis	II. Citrus Canker
C. Xanthomonas citri	III. Late Blight of Potato
D. Albugo candida	IV. Black Rust of Wheat

 Choose the correct answer from the options given below: