Biology questions
20584 published questions with worked solutions.
- ABO blood grouping is controlled by gene I which has three alleles and show co-dominance. There are six genotypes. How many...
- Given below are four statements (a-d) regarding human blood circulatory system (a) Arteries are thick-walled and have narrow...
- Vegetative propagation in Pistia occurs byNot in NEET syllabus
- When domestic sewage mixes with river water
- Root development is promoted by
- Which one of the following is now being commercially produced by biotechnological procedures?
- An elaborate network of filamentous proteinaceous structures present in the cytoplasm which helps in the maintenance of cell...
- Which one of the following is a xerophytic plant in which the stem is modified into a flat, green and succulent structure?
- The lac operon consists of
- Which one of the following is the correct description of a certain part of a normal human skeleton?
- An example of endomycorrhiza is
- The correct floral formula of soyabean is
- The 3'-5' phosphodiester linkages inside a polynucleotide chain serve to join
- In genetic engineering, a DNA segment (gene) of interest, is transferred to the host cell through a vector. Consider the...
- Apomictic embryos in citrus arise from :
- If due to some injury the chordae tendinae of the tricuspid valve of the human heart is partially non-functional, what will be...
- The nerve centres which control the body temperature and the urge for eating are contained in
- The plasma membrane consists mainly of
- In unilocular ovary with a single ovule the placentation is
- The genetically-modified (GM) brinjal in India has been developed for