Why did early vascular plants need to live in environment where there was plenty of water?

Why did early vascular plants need to live in environment where there was plenty of water?

Why did early vascular plants need to be in an environment where there are plenty of water? They needed water to reproduce, grow, and disperse. If the vascular plants were in a dry environment their offspring wouldnt survive. Plants supply food to nearly all terrestrial organisms, including humans.

Which suggests that life evolved from chemicals slowly increasing in complexity over a period of millions of years?

Which suggests that life evolved from chemicals slowly increasing in complexity over a period of millions of years? Astronomers have detected the presence of various chemicals in deep space similar to those thought to have been synthesized in Earth’s early atmosphere.

What is the advantage of a Gymnosperm producing a seed over a fern producing a spore?

What is the advantage of a gymnosperm producing a seed over a fern producing a spore? Seeds are diploid, and can grow directly into a sporophyte. You just studied 26 terms!

Is the place or set of environmental conditions in which a particular organism lives?

Habitat is the place or set of environmental conditions, in which a particular organism lives.

Which is an adaptation that helped plants survive on land?

Plant adaptations to life on land include the development of many structures — a water-repellent cuticle, stomata to regulate water evaporation, specialized cells to provide rigid support against gravity, specialized structures to collect sunlight, alternation of haploid and diploid generations, sexual organs, a …

Why did evolutionary changes occur?

Evolutionary processes depend on both changes in genetic variability and changes in allele frequencies over time. Microevolution reflects changes in DNA sequences and allele frequencies within a species over time. These changes may be due to mutations, which can introduce new alleles into a population.

How did life become more complex?

Awash with squadrons of mitochondria cranking out energy, early eukaryotes were free to grow larger and accumulate bigger and more complex genomes. And these expanded genomes provided the genetic raw material that permitted the evolution of ever more complex life.

What advantages do seed plants have over seedless plants?

Seed plants have some advantages over seedless plants. For example, when a seed begins to grow, the young plant uses the food stored in the seed. The spores of seedless plants don’t have stored food to help a new plant grow. Another advantage of seed plants is that seeds can be spread by animals.

What are two advantages that seeds have over spores?

What Advantages Do Seeds Have Over Spores?

• The Seed Coat. The seed coat is one major advantage seeds have over spores.
• Nourishment. Each seed contains nourishment for the embryo inside the seed.
• Fully Developed Embryo. Inside each seed is a fully developed embryo that is ready to begin growing.
• No Water Required.

What is the term used for an abundant species that plays a role in structuring its biological community?

Keystone species. plays a critical role in biological community that is out of proportion to its abundance.

What is all of the conditions surrounding an organism?

Environment. All of the conditions surrounding an organism.