Answer:
Pollen reproductive structures consist only
of stamens would be able to produce
Explanation:
No C is the answer
Answer:
The correct answer is They are very common in symbiosis in all plant families.
Explanation:
Nitrigen fixation is a process in which the atmospheric nitrogen is converted to ammonia by the help of nitrogen fixing bacteria such as azobacter, clostridium.
These bacteria lives in the root nodules of leguminous plants and some of them are free living soil bacteria such as azobacter.
These bacteria only form symbiotic relationship with the root leguminous plants but not with other plant families.
Answer:
The 3 major observations were:
1. More individuals are produced each generation that can survive.
2. Phenotypic variation exists among individuals and the variation is heritable (through parents' genes).
3. Those individuals with heritable traits better suited to the environment will survive.
Explanation:
Charles Darwin was a British naturalist who proposed the theory of known to everyone as 'The Theory of Evolution' through natural selection.
Answer: option c - in the coding region of the Pitx1 gene
Explanation:
Note that there is LACK OF SPINE, not the presence of defective spine; so, an heritable mutation must have occurred in the coding region of pix1 gene of freshwater sticklebacks resulting in absolute LACK OF SPINE
