Biology questions
20584 published questions with worked solutions.
- Secondary metabolites such as nicotine, strychnine and caffeine are produced by plants for their :
- The oxygenation activity of RuBisCo enzyme in photorespiration leads to the formation of :
- Bt cotton variety that was developed by the introduction of toxin gene of Bacillus thuringiensis (Bt) is resistant to :
- Which of the following refer to correct example(s) of organisms which have evolved due to changes in environment brought about by...
- Identify the wrong statement with reference to immunity.
- Identify the correct statement with reference to human digestive system.Not in NEET syllabus
- Match the following columns and select the correct option. List-I: (a) Clostridium butylicum (b) Trichoderma polysporum (c)...
- Presence of which of the following conditions in urine are indicative of Diabetes Mellitus ?
- Floridean starch has structure similar to :
- Select the option including all sexually transmitted diseases.
- Match the following with respect to meiosis : List-I: (a) Zygotene (b) Pachytene (c) Diplotene (d) Diakinesis List-II: (i)...
- Which of the following pairs is of unicellular algae ?
- Which of the following hormone levels will cause release of ovum (ovulation) from the graffian follicle ?
- Match the following columns and select the correct option. List-I: (a) Bt cotton (b) Adenosine deaminase deficiency (c) RNAi (d)...
- Which of the following is correct about viroids ?
- The ovary is half inferior in :
- Match the trophic levels with their correct species examples in grassland ecosystem. List-I: (a) Fourth trophic level (b) Second...
- How many true breeding pea plant varieties did Mendel select as pairs, which were similar except in one character with...
- In water hyacinth and water lily, pollination takes place by :
- In light reaction, plastoquinone facilitates the transfer of electrons from :