Which of the following impart a red colour to Rose petals?

Related Mcqs:

1. Rose is an example of____________?

   A. Hydrophytes
   B. Mesophytes
   C. Xerophytes
   D. Halophytes

2. Which of the following pigment is Blue- green in colour?

   A. Chlorophyll a
   B. Chlorophyll b.
   C. Chlorophyll c
   D. Chlorophyll d.

3. The plant dye Henna imparts orangered colour to skin and hairs due to its reaction with which of the following?

   A. Lipids
   B. Carbohydrates
   C. Amino acids
   D. Protein and amino acids

   Submitted by: Rashid Mehmood

4. Which one gives blue colour with iodine_______________?

   A. Starch
   B. Glycogen
   C. Cellulose
   D. Polysaccharide

5. Golden brown colour of diatoms is due to presence of__________?

   A. Mycoxanthin, mucoxanthin and myxoxanthophylls
   B. Alpha and beta carotenes and myxoxanthin
   C. Fucoxanthin, diatoxanthin, diadinoxanthin
   D. None of the above

6. Human skin colour is _________?

   A. Multifactorial
   B. Pleiotropic
   C. Polygenic
   D. Epistatic

   Submitted by: Muzaffar

7. Pigment present in red algae is_____________?

   A. fucoxanthin
   B. phycocyanin
   C. phycoerythrin
   D. bilirubin

8. Far-red light promotes flowering in_______________?

   A. Short day plant
   B. Long day plant
   C. Day neutral plant
   D. None of these

9. Life span of Red Blood Cells_____?

   A. 150 Days
   B. 120 Days
   C. 80 Days
   D. 100 Days

   Submitted by: SamiJan

10. Variation in the size of red blood cells is called __________?

    A. hypochromia
    B. Anisocytosis
    C. Poikilocytosis
    D. Polychromatophilia

    Submitted by: Tahir ullah