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TLS Online TPP Program

#Question id: 5341

Which of the following is incorrect statement regarding sex determination in drosophila?

#Unit 8. Inheritance Biology

  1. It is based on haplo-diploidy sex determination

  2. Presence of the Y chromosome does not determine maleness in Drosophila

  3. It is determine by the number of X chromosomes divided by the number of haploid sets of autosomal chromosomes

  4. Transformer mutation converts a female with an X:A ratio of 1.0 into a phenotypic male

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TLS Online TPP Program

#Question id: 23484

#General Aptitude

The Computer Monitor is joined with
TLS Online TPP Program

#Question id: 10899

#Unit 6. System Physiology – Plant

Companion cells transport of photosynthetic products from producing cells in mature leaves to the sieve elements in the minor veins of the leaf. There are at least three different types of companion cells in the minor veins of mature, exporting leaves, All three cell types have dense cytoplasm and abundant mitochondria;
TLS Online TPP Program

#Question id: 30

#Unit 1. Molecules and their Interaction Relevant to Biology

Amongst the following chemical elements that are essential to organisms, which of the following set of elements have an atomic number above that of selenium?
TLS Online TPP Program

#Question id: 12714

#Unit 6. System Physiology – Plant

Physiological and biochemical perturbations in plants caused by fluctuations in the abiotic environment, given column I with environmental factor and with its effects in the form of primary effects  in column II and secondary effects  in column III

 

            COLUMN I 

      (environmental factor )

 

              COLUMN II

           (primary effects)

 

            COLUMN III

        (secondary effects)

 

A) Water deficit

 

 

i) Hypoxia,  Anoxia

 

a) Membrane dysfunction

 

B) High temperature

 

 

ii) ROS production

 

b) Reduced cellular and metabolic activities,

Leaf abscission,

Ion cytotoxicity and Cavitation

 

 

C) Trace element toxicity

 

 

iii) Photo inhibition

 

c) Reduced respiration,    

Fermentative metabolism,       Inadequate ATP production ,

 ROS production and

 Stomatal closure

 

D) Flooding and soil compaction

 

 

iv) Membrane destabilization

 

d) Inhibition of PSII repair

 

E) Chilling

 

v) Cell dehydration and Hydraulic resistance

 

e) Disruption of metabolism

 

F) High light intensity

 

 

 

f) Photosynthetic and respiratory inhibition, ROS production

 

Find out the correct combination of given above column;
TLS Online TPP Program

#Question id: 12632

#Unit 6. System Physiology – Plant

In brief, brassinolide binding to the brassinosteroid receptor kinase present on the plasma membrane, these brassinosteroid receptor kinase is,