1. during pollination, where is pollen transferred to?
2. the endosperm that forms from the union of a sperm nucleus and the polar nuclei of the central cell is?
3.Which of the following is an example of a fruit? 1.tomato, cucumber, squash.
4.The seed develops from the? 1.anther, receptacle, ovule or ovary
1. During pollination, pollen is transferred to the stigma of flowering plants.
To understand how pollen is transferred during pollination, we need some background knowledge. Pollination is the transfer of pollen grains from the male reproductive parts of a flower (anther) to the female reproductive parts (stigma) of the same species.
To witness this process, you can observe a flowering plant, preferably one with open flowers. Some common examples include roses, daisies, or sunflowers. Wait until you see an open flower with visible anthers (the part where pollen is produced) and stigma (the part where pollen is received). You can then observe insects like bees, butterflies, or even wind playing a crucial role in transferring the pollen from the anther to the stigma.
2. The endosperm that forms from the union of a sperm nucleus and the polar nuclei of the central cell is called triploid endosperm.
To understand this process, we need to look at double fertilization, which is a unique feature of flowering plants. Double fertilization involves two sperm cells from the pollen grain. One sperm fertilizes the egg, forming the zygote (which develops into the embryo). The second sperm combines with two polar nuclei in the center of the embryo sac to form a triploid (containing three sets of chromosomes instead of the usual two) endosperm.
You can study this process by observing the anatomy of a flowering plant's reproductive structures, such as a dissected flower or cross-section of a flower under a microscope. You can find helpful diagrams or videos online that illustrate the process of double fertilization in flowers.
3. Tomato is an example of a fruit.
To determine whether a plant structure is a fruit, we need to understand the botanical definition of a fruit. In botany, a fruit is the mature ovary of a flowering plant, typically containing seeds. In simple terms, if a structure develops from a flower's ovary and contains seeds, it is considered a fruit.
To identify whether tomato, cucumber, or squash are fruits, you can trace back to their origin in the plant's life cycle. All three of these options originate from the ovary of a flower and contain seeds, making them fruits. Remember, in botanical terms, fruits can have a wide range of shapes and sizes, not just what we typically think of as fruits like apples or oranges.
4. The seed develops from the ovule.
To understand the development of seeds, we need to learn about the plant's reproductive structures. The ovule is a structure present in the ovary of a flower. It contains the female reproductive cells, including the egg. Once fertilized by a sperm cell, the ovule develops into a seed, typically containing an embryo (developing plant) and necessary nutrients for its growth.
To observe this process, you can study the life cycle of a flowering plant. You can do this by observing different stages of flower development, including the formation of the ovules in the ovary. Impressive visual resources, such as illustrations or videos, are available online to help you understand the process of seed development in flowers.