<span>Cell Membrane which is a Selectively Permeable Membrane.
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Answer:
(D) H Vacuole
Explanation:
The vacuole is the organelle of the plant which contains water reserves of the plant and essential minerals required by the plant to grow. It also helps the plant to maintain its structure and provides rigidity
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Astronomers have seen stars forming within a nebular cloud. As the nebular cloud condenses and its own gravitational attraction collapses it, heat and energy build up creating a planet.
Robert Hooke observed the cells through a combination of lenses.
After Robert Hooke, the development of microscopy take place. After the development of the microscopy, scientist were able to observe the features of the cell. In order to formulate a cell theory observation of most of the cells was necessary. So, it was necessary to observe different types of cells from different organism. So, the advancement of the microscopy and observation process required for the formulation of the cell theory was the reason for the delayed development of the cell theory.
Secondary consumers may be carnivores that eat meat or omnivores that eat both plants and animals.
<h3>What are secondary consumers?</h3>
Consumers in biology are organisms (heterotrophs) that uses other organisms for food in order to gain energy.
Consumers can either be primary or secondary. Primary consumers feed directly on plants, hence, are said to be herbivores.
On the other hand, secondary consumers feed majorly on primary consumers, making them carnivorous in nature.
However, secondary consumers may be carnivores that eat meat or omnivores that eat both plants and animals.
Learn more about secondary consumers at: brainly.com/question/14171839
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