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xxTIMURxx [149]
2 years ago
8

What is a Gymnosperm? Provide 2 examples

Biology
2 answers:
GrogVix [38]2 years ago
5 0

Answer:

Gymnosperms are vascular plants of the subkingdom Embyophyta and include conifers, cycads, ginkgoes, and gnetophytes. Some of the most recognizable examples of these woody shrubs and trees include pines, spruces, firs, and ginkgoes

Example:The gymnosperms are plants belonging to the Kingdom Plantae, Subkingdom Embryophyta. They include the conifers (pines, cypresses, etc.), cycads, gnetophytes, and Ginkgo. These plants are known for bearing seeds like angiosperms.

iren [92.7K]2 years ago
3 0

Answer:

Gymnosperm

Definition

noun, plural: gymnosperms

A vascular plant in which the seeds are not enclosed by a ripened ovary (fruit)

•Here are Five examples of gymnosperms:

, • Cycas, pinus, Thuja, Cedrus, Abies, Larix are some of the examples of gymnosperms.

• Here are two examples of angiosperms:

• Some common examples of angiosperms include magnolia trees, roses, tulips, and tomatoes.

Explanation:

The gymnosperms are plants belonging to the Kingdom Plantae, Subkingdom Embryophyta. They include the conifers (pines, cypresses, etc.), cycads, gnetophytes, and Ginkgo. These plants are known for bearing seeds like angiosperms. The gymnosperms and the angiosperms comprise the group of seed-bearing plants called spermatophytes.

However, the difference between gymnosperms and angiosperms in terms of seeds is that the seeds of the gymnosperms are naked, meaning the seeds are not enclosed within the ripened ovary (i.e. fruit). The seeds of the gymnosperms develop on the surface of scales or leaves. Certain gymnosperms, such as conifers, are known to produce cones.

The cones may be male or female. The male cone (called microstrobilus) bears pollen. The wind and insects are the main agents of pollination. The pollen contains sperm to fertilize the egg inside the ovule in the female cone (called megastrobilus). Ovules that have become fertilized by the pollen become seeds. The economic uses of gymnosperms are for lumber, soap, varnish, nail polish, perfume, gum, and food.

Word origin: Greek gymnos (naked) + sperma (seed)

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Aleksandr [31]

Answer:

Three different kinds of muscles are -:

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Explanation:

  1. <u>SKELETAL MUSCLES -: </u>There are long, cylindrical, and striated skeletal muscle cells. They are multi-nucleated, which means they have more than one nucleus. This is because from the fusion of embryonic myoblasts, they are created. Each nucleus controls the sarcoplasm's metabolic demands around it. There are high energy requirements for skeletal muscle cells, because they contain several mitochondria in order to generate adequate ATP. <u>Examples of skeletal muscles: arms and legs- </u>T<u>he muscles that belong to the arms and legs feature in pairs. Abdomen and Back- These muscles are connected to the various sets of skeletal muscles that run across the torso.</u>
  2. <u>CARDIAC MUSCLES -</u>: Cardiomyocytes have a short and narrow outline and are fairly rectangular. They are about 0.02 mm wide and 0.1 mm (millimetres) long, respectively. There are many sarcosomes in cardiomyocytes, which provide the required energy for contraction. Cardiomyocytes usually contain a single nucleus, unlike skeletal muscle cells. Cardiomyocytes, although they contain more sarcosomes, normally contain the same cell organelles as skeletal muscle cells.<u> example - cardiac muscle is present in heart. </u>
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Chemical reactions are the result of the transformation that occurs in substances, where atoms rearrange themselves, modifying their initial state. Thus, chemical compounds undergo changes generating new molecules. In turn, the atoms of the elements remain unchanged.

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Answer:

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