Answer:
Explanation:
Both Plant and Animal Cells:
Contain a nucleus, which houses the cell's genetic material (DNA).
Have a cell membrane (plasma membrane) that separates the cell from its environment.
Contain cytoplasm, a semi-fluid substance where many cellular activities occur.
Contain ribosomes, which are involved in protein synthesis.
Differences Between Plant and Animal Cells:
Cell Wall: Plant cells have a rigid cell wall made of cellulose, providing structural support. Animal cells lack a cell wall.
Chloroplasts: Plant cells typically contain chloroplasts, which are responsible for photosynthesis. Animal cells do not have chloroplasts.
Vacuoles: Plant cells often have a large central vacuole responsible for storing water and nutrients. Animal cells have smaller vacuoles, if present.
Shape: Plant cells often have a fixed rectangular or square shape due to the cell wall. Animal cells are more irregular in shape.
Lysosomes: Animal cells usually contain lysosomes, which are involved in cellular waste digestion. Plant cells have fewer lysosomes.
Functionality:
Plant cells are specialized for photosynthesis, allowing them to produce their food from sunlight.
Animal cells are adapted for various functions such as locomotion, digestion, and sensory perception.
b. 206
c. 216
d. 235
Answer;
-Independent variable
Explanation;
-An independent variable is defines as the variable that is changed or controlled in a scientific experiment. An independent is changed or controlled in a scientific experiment to test the effects on the dependent variable. A dependent variable on the other hand, is the variable being tested and measured in a scientific experiment.
-A change in the independent variable directly causes a change in the dependent variable.The independent and dependent variables may be viewed in terms of cause and effect.
(1) snake eating a bird
(2) tree absorbing minerals
(3) fungus breaking down wastes
(4) deer eating grass
Answer:
(4) deer eating grass
Explanation:
In ecology, a pattern of feeding exists through which organisms obtain energy by feeding on one another. This pattern is called FOOD CHAIN. Each organism of the food chain are classified into into steps called trophic level based on their feeding behavior.
The first level contains unique set of organisms called AUTOTROPHS, based on their ability to produce their own food. These autotrophs are usually plants in a terrestrial environment. They are called PRIMARY PRODUCERS. They are the lowest level in the food chain.
These producers are eaten by another set of organisms called PRIMARY CONSUMERS. They are dependent on plants for food and energy source, hence, called heterotrophs.
In this question, the grass represents the producer, which will be fed upon by a herbivorous deer (consumer)
2. What factors determine Earth's climate?
Answer-Sea flows act a lot of like a transport line, moving warm water and precipitation from the equator toward the posts and cold water from the shafts back to the tropics. In this manner, sea flows manage worldwide atmosphere, assisting with balancing the lopsided dissemination of sun powered radiation arriving at Earth's surface.
b. ecosystem—biome—community—population—individual
c. individual—population—community—ecosystem—biome
d. ecosystem—individual—population—biome—community
Answer: c. individual—population—community—ecosystem—biome
Explanation:
Biosphere is a part of earth which includes the living beings like plants and animals interact with the other important spheres of the earth like atmosphere, lithosphere, and hydrosphere to lead a healthy life.
c. individual—population—community—ecosystem—biome is the correct sequence that lists the levels of the biosphere from smallest to the largest.
The individual represent a single organism of any species, the population includes individuals of a single species, the community includes members of two or more species living together, the ecosystem involves one or more biotic communities which interact with their non-living physical environment.
mutation
B.
fertilization
C.
variation
D.
reproduction
Reproduction is the process in which an organism makes a new organism. Thus, the correct option is D.
Reproduction is the process of production of new organism. There are two main types of reproduction including sexual and asexual reproduction.
In sexual reproduction, an organism combines the genetic information from each of the two parents and is genetically unique from both the parents. In asexual reproduction, one parent copies itself to form a genetically identical offspring called as clone.
Reproduction ensures the continuity of the species and keeps the species from becoming extinct. It plays a role in evolution of the species as it creates variations through genetic recombination.
Therefore, the correct option is D.
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