Answer:
The soil air is responsible for influencing the availability of many nutrients. Soil air is also by many of the microorganisms that release plant nutrients to the soil. The soil air can fill soil pores as water drains or is removed from a soil pore by evaporation or root absorption.
Explanation:
Oxygen belongs to the Chalcogens family of elements. Oxygen is found in Group 16 or VIA of the periodic table, along with the elements sulphur, selenium, polonium and tellurium.
Answer:
Cellulose is the main substance found in plant cell walls and helps the plant to remain stiff and strong. Humans cannot digest cellulose, but it is important in the diet as a source of fibre.
Explanation:
Answer:
Translocation
Explanation:
Translocation is a chromosomal abnormality (mutation) in which a chromosome breaks and a portion of it reattaches to a different chromosomal location. It can occur during the formation of sperms and eggs during meiosis.
Translocation is of two main types: 1. Reciprocal location, in which two fragments break off from two different (non-homologous) chromosomes and switch places.
2. Robertsonian translocation, in which an entire chromosome (usually acrocentric) becomes attached to another chromosome (acrocentric) at the centromere to form a metacentric chromosome.
Translocation can either be BALANCED, where no genetic information is missing or additional. Hence, there is an even exchange with no adverse effect on the affected individual or UNBALANCED, where the exchange of chromosomal material is unequal resulting in an extra or missing genes.
Develops through gradual process over many generations.
