Plastid Presence in Plant Cells
Plastids are a group of organelles found in plant cells and eukaryotic algae. They have distinct roles, including photosynthesis, storage of food, and pigment synthesis.
Analyzing Plastid Distribution
Understanding where plastids are found is key to answering this question.
- Plant Cells: Plastids, such as chloroplasts (for photosynthesis) and others (for storage), are defining features of plant cells.
- Animal Cells: Animal cells lack plastids. They obtain energy through different mechanisms like consuming food.
- Prokaryotic Cells: Cells like bacteria are prokaryotic and lack membrane-bound organelles, including plastids. Photosynthesis in bacteria occurs using different structures.
Evaluating the Options
Let's examine each statement:
- Option 1: Incorrect. Plastids are characteristic of plant cells, not animal cells.
- Option 2: Incorrect. Prokaryotic cells like bacteria do not possess plastids.
- Option 3: Incorrect. Plastids are absent in animal cells, so they cannot be present in equal amounts.
- Option 4: Correct. This statement accurately reflects that plastids are found exclusively in plant cells and are absent in animal cells.
Therefore, the correct description is that plastids are present only in plant cells and absent in animal cells.
Important Questions from Biology
Which of the following statements about living and non-living being is/are correct?
1. While living being can demonstrate growth and repair, non-living being cannot.
2. While living being demonstrates metabolic processes, non-living being does not.
Select the correct answer using the code given below.Movement of materials to different parts of cytoplasm and nucleus is generally carried out by
The gaseous product of a process in plants is a requirement for another vital process that releases energy. Given below are four combinations of the process and product. Identify the correct answer.
Which one of the following cell organelles may play a role in expelling excess water and wastes in case of unicellular organisms?
Transformation of meristematic cells into specific permanent tissues occurs by the process of
