Pre AP Biology -CELLS 2.3 Specialized Cells- MCQ Exam Style Questions -New Syllabus
Pre AP Biology -CELLS 2.3 Specialized Cells- MCQ Exam Style Questions – New Syllabus 2025-2026
Pre AP Biology -CELLS 2.3 Specialized Cells- MCQ Exam Style Questions – Pre AP Biology – per latest Pre AP Biology Syllabus.
▶️ Answer/Explanation
The correct answer is a. pericycle.
In eudicot leaves, the ground tissue is differentiated into palisade and spongy mesophyll.
Vascular bundles (veins) are present to transport water and nutrients throughout the lamina.
The pericycle is a specific layer of cells found in roots and stems, not in leaves.
In roots, the pericycle is responsible for the initiation of lateral roots.
In leaves, the vascular bundles are typically surrounded by a bundle sheath rather than a pericycle.
Therefore, the pericycle is the structure absent in the internal anatomy of a leaf.
▶️ Answer/Explanation
The term dendritic is derived from the Greek word dendron, meaning “tree.”
In biology, this refers to a branching structure similar to the limbs of a tree or the roots below.
Unlike animals, plants expand their surface area by repeated bifurcation or branching.
This allows them to maximize sunlight absorption above ground and nutrient uptake below ground.
Therefore, the definition centers on the highly branched nature of the plant organs.
The correct option is c.
▶️ Answer/Explanation
c. Each will develop into a starfish.
– Starfish embryos undergo regulative development in early stages.
– Cells at the blastula stage are totipotent, meaning they can form a complete organism.
– Isolating one cell allows it to divide and differentiate independently into a full starfish.
– The original embryo can compensate for the lost cell through cell rearrangement and proliferation.
– This phenomenon is observed in echinoderms like starfish and sea urchins.
– Thus, both the isolated cell and the remaining embryo develop into complete starfish.