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TLS Online TPP Program

#Question id: 28429

At which stage the primitive streak cells form a third layer that lies between the hypoblast and epiblast cells?

#Unit 5. Developmental Biology
  1. by stage 2 at 12–14 hours after the egg is laid
  2. by stage 3 at 12–14 hours after the egg is laid
  3. by stage 3 at 15–17 hours post laying
  4. by stage 2 at  15–17 hours post laying
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TLS Online TPP Program

#Question id: 26847

#Unit 10. Ecological Principles

Food chain referred to as
TLS Online TPP Program

#Question id: 3329

#Unit 11. Evolution and Behavior

The following genotypes of one locus in population are given  - Genotype ( Number)

AA (120)  AB ( 30)  BB  (50) CC  (300)

AC  (400)  BC (100)

Which of the following is the correct frequency of C allele and A allele respectively?
TLS Online TPP Program

#Question id: 7314

#Unit 5. Developmental Biology

With reference to plant flowering pattern; match the terms of Column I with the most appropriate term of Column II. (Se-Sepal; Ca-Carpel; St-stamen; Pe-Petal)

s.no.

Homeotic mutants

(Column 1)

S. No

Flower patterning

(Column 2)

A.     

Apetala2 mutant

                    I.  

Ca-Ca-Ca-Ca

B.      

Agamous /Apetala3 mutant

                    II.    

Se-Pe-Pe-Se

C.      

Agamous mutant

               III. 

Se-Se-Se-Se

D.     

Apetala2/Apetala3 mutant

                IV.

Ca-St-St-Ca

 
TLS Online TPP Program

#Question id: 768

#Unit 1. Molecules and their Interaction Relevant to Biology

MicroRNAs are important gene regulators, but the miRNAs are also regulated in turn by other RNAs. Which, if any, of the following classes of RNA are not known to contain RNAs that regulate miRNAs?
TLS Online TPP Program

#Question id: 2569

#Unit 2. Cellular Organization

Some botanists argue that the entire plant should be considered as a single unit rather than a composite of many individual cells. Which of the following cellular structures best supports this view?