define these words?????????

Biology
Tutor: None Selected Time limit: 1 Day

Vascular tissue

Seeds

Alteration of generations

Sporophyte

Spore

Gametophyte

Nonvascular plant

Oct 3rd, 2015

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  • Vascular tissue is the tissue in higher plants that constitutes the vascular system, consisting of phloem and xylem, by which water and nutrients are conducted throughout the plant.
  • Seeds is a flowering plant's unit of reproduction, capable of developing into another such plant.
  1. Alteration of generations is the multicellular haploid plant structure is called the gametophyte, which is formed from the spore and give rise to the haploid gametes. The fluctuation between these diploid and haploid stages that occurs in plants
  • Sporophyte is is the diploid multicellular stage in the life cycle of a plant or alga. It develops from the zygote produced when a haploid egg cell is fertilized by a haploid sperm and each sporophyte cell therefore has a double set of chromosomes, one set from each parent.

  • Spore is a minute, typically one-celled, reproductive unit capable of giving rise to a new individual without sexual fusion, characteristic of lower plants, fungi, and protozoans.

  • Gametophyte is the haploid multicellular stage in the alternation of generations life cycle of plants and algae
  • Non vascular plant are plants without a vascular system (xylem and phloem). Although non-vascular plants lack these particular tissues, many possess simpler tissues that are specialized for internal transport of water
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Sep 22nd, 2015

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Oct 3rd, 2015
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