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Biology U4C

Across
The larger, or female spore in heterosporous vascular plants.
A period in the life of the cell between two periods of mitosis.
A life cycle in which meiosis occurs shortly after fertilization, and most of the life cycle is passed as a haploid.
The transformation of a larva to an adult. It occurs only in animals having great differences in form between the larva and adult.
A sporangium that produces microspores.
A kind of cell division involving two cell divisions, and a halving of chromosome number. It is responsible for genetic recombination.
A chemical substance made in one part of an animal or plant that causes some definite effect in the cells of another part of the same animal or plant.
The juvenile stage or phase of life of an organism which undergoes metamorphosis.
Gametes that are the same in size and shape.
A spore produced by meiosis.
The first or earliest period of life in a young animal.
Down
The smaller, or male spore, in heterosporous vascular plants.
Producing spores that are different in size and shape.
Producing spores that are all the same in size and shape.
The phase of mitosis when the daughter chromosomes line up across the middle of the cell.
Cone-bearing plant. Often called an evergreen.
Having a single, complete set of chromosomes. The chromosomes do not occur in matched pairs. A haploid cell has one half of each pair of homologous chromosomes.
Incapable of independent movement.
The condition of having isogametes.
The technique of developing roots on a stem of a plant while that stem is still attached to the parent plant. After a new root system is established the new plant is cut away from the parent plant and planted.