Table of Contents
- 1 What is the difference between Fertilisation & pollination?
- 2 When pollination occurs between the flowers on different plants of the same or different species so it is called pollination?
- 3 What is it called when pollination occurs between two different plants?
- 4 What are the three parts of the pistil in a flower?
- 5 Is present in unisexual flower?
- 6 Which is the largest family of flowering plants?
- 7 Which is the most common mechanism for sympatric speciation in plants?
- 8 What is the symbiotic relationship between fungi and plants?
What is the difference between Fertilisation & pollination?
The main difference between pollination and fertilization is that pollination is the deposition of pollen grains from the anther to a stigma of a flower whereas fertilization is the fusion of the haploid gametes, forming a diploid zygote.
When pollination occurs between the flowers on different plants of the same or different species so it is called pollination?
Cross-pollination is the transfer of pollen from the anther of one flower to the stigma of another flower on a different individual of the same species.
What is it called when male and female flowers grow on different plants?
The plants in which male and female flowers are borne on separate individuals, are referred to as dioecious plants, e.g., papaya, date palm. Dioecious plants exhibit xenogamy.
What is it called when pollination occurs between two different plants?
Cross-pollination, also called allogamy, occurs when pollen is delivered from the stamen of one flower to the stigma of a flower on another plant of the same species. The pollen is released from the anther within the flower or the pollen on the anther grows a tube down the style to the ovules.
What are the three parts of the pistil in a flower?
A flower can have many pistils. Pistils are composed of three main parts: 1) the sticky top called the stigma, which catches pollen grains; 2) the style, a long neck that connects the stigma and the ovary; and 3) the ovary, in which ovules are produced.
Why does pollination occur before fertilization?
Pollen can’t get from the anthers to the ovules on its own, so pollination relies on other things to move the pollen. The male anthers and their pollen appear in a flax flower about a week before the female stigma, to reduce the chance of self-fertilisation.
Is present in unisexual flower?
Androecium or gynoecium is present in unisexual flower.
Which is the largest family of flowering plants?
Seeds & Fruits That Ride Ocean Currents. The three largest flowering plant families containing the greatest number of species are the sunflower family (Asteraceae) with about 24,000 species, the orchid family (Orchidaceae) with about 20,000 species, and the legume or pea family (Fabaceae) with 18,000 species.
How can scientists compare the relationships between all species?
Scientists can compare the relationships between all modern species by examining a gene that performs a similar function in species from all kingdoms. What does this one gene encode According to the most current classifications, which of the following groups is the most different from all the others?
Which is the most common mechanism for sympatric speciation in plants?
The most common mechanism for sympatric speciation in plants is: -polyploidy. -geographic isolation. -disruptive selection. -spontaneous mutation. -punctuated equilibrium.
What is the symbiotic relationship between fungi and plants?
Mycorrhizae are fungi that are symbiotic with plants. What is the likely relationship between these fungi and plants A) The fungi provide soil nutrients to the plants; the plants provide food to the fungi. B) The fungi remove bacteria from the soil; the plants provide water to the fungi.