7th Grade - 1st Semester Final Exam

Front

What is the function of chloroplasts in plant cells?

Back

Chloroplasts are organelles that conduct photosynthesis, converting light energy into chemical energy in the form of glucose.

Front

What is polygenic inheritance?

Back

Polygenic inheritance is a type of inheritance where two or more genes interact to produce a single trait, such as skin color or height.

Front

What is cytokinesis?

Back

Cytokinesis is the process during cell division where the cytoplasm divides, resulting in the formation of two new daughter cells.

Front

What are rhizoids?

Back

Rhizoids are root-like structures that anchor non-vascular plants like mosses and hornworts to the ground.

Front

What happens during metaphase?

Back

During metaphase, chromosomes line up at the center of the cell, preparing for separation during cell division.

Front

What is the role of the palisade layer in a plant?

Back

The palisade layer is a layer of cells in leaves that contains chloroplasts and is responsible for most of the photosynthesis.

Front

Define cuticle in plants.

Back

The cuticle is a waxy layer that covers the surface of leaves and stems, helping to reduce water loss.

Front

What is the difference between simple dominance and incomplete dominance?

Back

In simple dominance, one allele completely masks the effect of another. In incomplete dominance, the traits blend, resulting in a third phenotype.

Front

What is the significance of nodes in plants?

Back

Nodes are points on a stem where leaves or branches originate, playing a crucial role in plant growth and development.

Front

What is the function of the cytoplasm in a cell?

Back

The cytoplasm is the jelly-like substance within a cell that holds organelles and is the site for many metabolic processes.