Answer:
In general, leaf is considered to be organs of a plant. However, leaves collectively could be called as a foliage. Different tissues make up an organ. The leaf comprises of different tissues:
- The epidermis tissue makes the upper and lower surface of the leaves.
- The mesophyll tissue is present in the centre of the leaves and contains chloroplasts.
- Vascular tissues, xylem and phloem, are also present in the plant which allow transportation.
Answer:
e. loving systems convert heat into chemical energy to reduce entropy
Explanation:
Entropy is the measure of energy in which heat is unable to reduce entropy
The correct answer is C. Microevolution describes the evolution of organisms in populations, while macroevolution describes the evolution of species over long periods of time.
Explanation:
In biology, the evolution refers to changes organisms and species go through over time which is usually prompted by changes in the environment and adaptative processes. Additionally, evolution can be studied from two main perspectives: microevolution and macroevolution. Microevolution focuses on studying the changes at a lower lever usually by studying individual organisms or population, but not all organisms of a species. On the other hand, macroevolution studies the evolution or changes in species or even a group of species. For example in a microevolution biologist might study birds evolution by analyzing individuals or a specific population, while from macroevolution all the species need to be studied.
