The answer is mitochondria
There are holes in the end of the phloem tubes because Phloem consists of sieve tube cells and companion cells for conduction of food These sieve elements are placed end to end . At the the junction of two sieve elements there is a plate called sieve plates having circular pores.
Answer:
Energy coupling occurs when the energy produced by one reaction or system is used to drive another reaction or system
Explanation:
Answer:
A hybrid organism is one that is heterozygous, which means that is carries two different alleles at a particular genetic position, or locus. Therefore, a dihybrid organism is one that is heterozygous at two different genetic loci.
Nutrients Pollution
Surface Water Pollution
Oxygen Pollution
