Answer:
Explanation:
White blood cells (WBCs) are specialized to respond to antigen and produce antibodies as well as undergo phagocytosis in response to toxic stimuli.
WBCs are part of immune system and there are five different kinds with specialized features.
In order to make a cell model, it is best to use a muscle cell and a nerve cell or neuron: there are pronounced structural differences and those are present throughout animal kingdom
Lower animals ( such as insects, worms etc. ) have different immune system, however, they do have typical neuron and a muscle cell/skin cell (fibroblast). Such cell models are likely to be easy, distinct and bring you good grades without going through much complication and confusions of various organ systems and animal models.
Answer: True
Explanation:
Amphibians are the animals that spend their life partially in water and partially on land. They are cold blooded animals that cannot regulate their body temperature.
Some of the characteristic feature of amphibians are:
They have a moist skin but do not have scales on their body and gas exchange takes place through their skin.
They have four legs, a double loop circulatory system, aquatic larvae.
Example: Toad, salamander, et cetera.
<u>Answer</u>:
(D) Carrying capacity describes the maximum number of individuals an ecosystem can support over time for a given population
<u>Explanation</u>:
The population size which can be supported indefinitely upon those service and resources which is available in ecosystem. These factors affect carrying capacity.
(1) The quantity of resources which is available In ecosystem.
(2) Population size and
(3) The amount of resource which is consumed by each individual
In a habitat, carrying capacity is different for each species. The reason behind it is the requirement of their food, shelter is different. When there is a lack of availability of food, then the population present there will decrease eventually.
A dissolved oxygen level that is too high or too low can harm aquatic life and affect water quality. ... Fish and crustaceans obtain oxygen for respiration through their gills, while plant life and phytoplankton require dissolved oxygen for respiration when there is no light for photosynthesis
Biological Classification.
The classification system starts with a group with a wide variety of organisms and becoming more selective as the groups get more specific.
Additional information: Carl Linnaeus classified organisms by shared characteristics.