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Which structure of a flowering plant holds seeds?
The ovule becomes the seed after fertilization. The ovary containing the fertilised ovules swells to become the fruit.
Why do gymnosperms and angiosperms not need flagellate sperm?
Gymnosperms and Angiosperms do not need flagellated sperm because they have other meathods to get the sperm to the egg. In Gymnosperms, the pollen that contains the sperm lands on the inside of a female cone scale where the megaspore mother cell is located. Once it lands there, the pollen begin to dig in and form a pollen tube. While this is happening, the megapore mother cell undergoes meiosis to form four haploid cells (now in gametophyte stage). One of these cells becomes the megaspore, one becomes the endosperm mother cell, and the other two become the gametopyte that surrounds the egg. When the sperm finally reaches the egg, it forms a zygote still inside the gametophyte. This zygote becomes the embryo, which becomes the seed, and the gametophyte becomes the seed coat. In Angiosperms, pollinators take pollen from one flower to another where it gets attached to a stigma, and forms a tube to that egg.
Scientists think plants probably evolved from in the sea?
Scientists believe that plants evolved from aquatic environments, such as algae and seaweed, which eventually adapted to life on land. The transition from water to land allowed plants to develop mechanisms to absorb water and nutrients from the soil, protect themselves from drying out, and reproduce without the need for water for fertilization. This evolutionary process enabled plants to diversify and become an essential part of terrestrial ecosystems.
How did humans become the most dominant species on Earth?
Humans became the most dominant species on Earth due to key evolutionary advantages such as intelligence, complex communication, and the ability to adapt to different environments. These traits enabled humans to develop advanced tools, social structures, and strategies for survival, ultimately leading to their dominance over other species.
Disappearance of the characteristics of a malignant tissue called?
When a malignant tissue loses its characteristic features, it is known as dedifferentiation. This process involves the cancer cells becoming less specialized and more aggressive, contributing to a poorer prognosis. Dedifferentiation can make the cancer more difficult to treat as the cells become less responsive to standard therapies.
Which geological period do the angiosperms become more common?
Triassic
When did use of penicillin become widespread?
1945
What hardware has enabled the computer to become smaller?
intergrated circuit
When did polyrhythms and polytonality really become widespread?
The Baroque period
Which dynasty did the worship of ancestors become widespread?
Zhou dynasty
What was the result of progressive attitude towards non whites?
Segregation become widespread and the norm novanet
Which is an example of a social crisis that has become a public issue?
Widespread unemployment
What is the synonym of the word abated?
Lessened or become less intense or less widespread.
What was the effect of the passage of the land-lease act?
it enabled the united states to become "the great arsenal for democracy."
What was the effect of the passage of the lend lease act?
It enabled the United States to become "the great arsenal for democracy."
What was the effect of the passage of the land lease act?
it enabled the united states to become "the great arsenal for democracy."
What was the effect of passage of the lend-lease act?
It enabled the United States to become "the great arsenal for democracy."
