B. Using the illustrations above, arrange the following statements to explain the process of pollen formation in angiosperms. Use numbers 1 (first) to 7 (last). Microgametogenesis _4. The generative cell subsequently detaches from the pollen grain wall and is engulfed by the vegetative cell forming a unique 'cell within a cell' structure. _5. Each microspore will form large vacuole displacing the microspore nucleus to an eccentric position against the microspore wall. _6. The nucleus undergoes first pollen mitosis which results in the formation of two unequal cells, a large vegetative cell and a small generative cell each containing a haploid nucleus. _7. The generative cell divides by mitosis to form two sperm cells completely enclosed within the vegetative cell cytoplasm. _8. No cytokinesis takes place forming a pollen grain having 3 haploid nucleus, 1 tube nucleus and 2 sperm cells for double fertilization. Microsporogenesis _9. A diploid sporogenous cells differentiate as microsporocytes (pollen mother cells or meiocytes) which divide by meiosis to form four haploid nuclei. 10. Distinct single-celled haploid microspores form after cytokinesis.

10.

Describe this in simple terms and de

A- What is the chemical composition of the Rubus Chingii plant? B- Describe the medical action of the Rubus Chingii plant  C-Mention the medicinal uses of the Rubus Chingii plant in animals

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4. A) Identify which type of light (Red or Far-Red) simulates seed germination. B) Identify which type of light (Red or Far-Red) inhibits seed germination. C) If a group of seeds was exposed to the following light sequence: red → far-red →red → far-red → red → darkness, would seed germination be inhibited or simulated? Please answer in order and label them.

Please answer question 4

A disease spreads that only effects the haploid cells of a plant, killing them. What would happen to an angiosperm? |- it would not be able to reproduce Il - the photosynthetic stage of the organism would die III - the sporophyte stage would be effected IV- organs containing sperm and egg would be effected O a) I and IV O b) II OC) I, II, III and IV O d) Il and II

Match the definition with the proper terms Separate staminate and pistillate flowers on a plant Temporal separation of staminate and pistillate floral development within a plant The immediate product of male meiosis in an angiosperm The land plant lineage with the dominant gametophyte generation One of the two primary lineages of seed plants The class of floral organ mutant that results in a Carpel-Stamen-Stamen-Carpel arrangement (beginning with whorl 1). A plant that flowers if uninterrupted darkness is less than the critical photoperiod The central repressor of flowering (What gene is it?) [Choose ] [Choose ] [Choose ] [Choose ] [Choose ] [Choose ] [Choose ] [Choose ]

A. What is double fertilization? B. What are the products of double fertilization? C. Explain the following quote “As an individual, the endosperm is unique as it has three ancestors and never leaves any descendants.” What are the three ancestors referred to in this quote? And why endosperm does not leave any descendants?