Practice paper · Bengaluru region

The coconut water from tender coconut is-

1. ACellular endosperm
2. BFree nuclear endosperm
3. CBoth cellular and free endosperm
4. DFree nuclear embryo

Opioid drugs bind to their specific receptors present in our heart -

1. AHeart
2. BCentral Nervous system
3. CGastrointestinal tract
4. DBoth (b) & (c)

Which of the following combination is correct?

1. AThorn of bougainvillea and tendril of cucurbits - Convergent evolution
2. BWings of a bat and Wings of an insect - Divergent evolution
3. CSweet potato and Potato - Convergent evolution
4. DFlippers of Penguin and flippers of dolphin - Divergent evolution

Identify the amino acid residue pair which constitutes the histone core?

1. ALysine and Arginine
2. BAsparagine and Arginine
3. CGlutamine and Lysine
4. DAsparagine and Glutamine

Which of these is NOT an example of in-situ method of conservation of biodiversity-

1. ABiosphere reserves
2. BZoological parks
3. CSacred grooves
4. DHotspots

Identify the equation which describes the Verhulst-Pearl Logistic growth-

1. AdN/dt = rN (K-N)
2. BdN/dt = rN (K-N)/K
3. CdN/dt = r (K-N)
4. DdN/dt = N (K-N)/K

One petal of Mediterranean orchid Ophrys bears a resemblance to the female bee in size, colour and markings. The male bee ‘pseudo-copulates’ with the flower and accidently does the pollination. The above interaction is an excellent example of –

1. AParasitism
2. BCompetition
3. CCo-evolution
4. DPredation