original project by @HuhPattern89 Kirbo and animation by Terminal Montage on YouTube (he's cool check him out) a bio chapter for me cuz why not Question 1 Bougainvillea flower is an example of incomplete flower having a large nectary water pollination large colourful bracts ✓ Question 2 A flower is said to be complete when: It has the corolla and calyx It has the corolla and gynoecium It has the androecium and gynoecium It has all the four whorls ✓ Question 3 The part of the flower that gives rise to the fruit is Sepals Petals Ovary ✓ Stamens Question 4 The part of the flower that gives rise to the seed is Ovary Placenta Ovule ✓ Pollen grain Question 5 The essential whorls of the flower are the Calyx and Corolla Stamen and ovary Calyx and epicalyx Androecium and gynoecium ✓ Very Short Answer Type Question 1 Match the parts in column A with the flowers or parts of flower in column B. Column A Column B Polyadelphous Polypetalous Pollen grains Calyx, corolla Free petals Nectar Non-essential Bombax Sweet fragrant fluid Pollen sac Answer Column A Column B Polyadelphous Bombax Pollen grains Pollen Sac Free petals Polypetalous Non-essential Calyx, corolla Sweet fragrant fluid Nectar Short Answer Type Question 1 Explain the following terms: Incomplete flower Staminate flower Pistillate flower Bisexual flower Answer Incomplete flower — A flower is said to be an incomplete flower if one or more sets of floral whorls are missing. E.g. American Elm. Staminate flower — A unisexual flower which contains only the stamens is called the male or staminate flower. E.g. Eastern Cottonwood. Pistillate flower — A flower which contains only the carpels is called the female or pistillate flower. E.g. Date Palm. Bisexual flower — A flower which contains both stamens and carpels is called a bisexual or hermaphrodite flower. E.g. Rose. Question 2 Distinguish between the following pairs: Flower and inflorescence Petals and petaloid sepals Polyandraus and Polyadephous androecium Answer Flower and inflorescence Flower Inflorescence Flower is a specialized shoot in which internodes are shortened and leaves are modified into floral structure. It refers to the mode of arrangement of flowers on the axis of a plant. Petals and Petaloid Sepals Petals Petaloid Sepals Non-essential parts of the flower which help in protection of reproductive parts or make the flower attractive for pollination. Sometimes sepals are undifferentiated. These taken together are called perianth. When perianth is non-green, it is described as a petaloid. Polyandraus and Polyadephous Androecium Polyandraus Polyadephous Androecium The filaments of the stamens are free. The filaments of the stamens are united in the multiple groups. Question 3 Where are the following structure/parts located and what are their functions? Placenta Thalamus Anther Stigma Answer Placenta: Location — Cushion or swollen region in the ovary. Function — Gives origin to ovules. Thalamus: Location — Tip of the flower stalk . Function — Bears all the parts of the flower. Anther: Location — Part of the stamen. Function — Produces male gametes or pollen grains. Stigma: Location — Terminal knob like part. Function — Serves as the landing place for pollen grains during pollination. Question 4 Why are the following described as stated: The androecium of pea flower is diadelphous. Ray florets of sunflower as neuters Salvia sepals as petaloid Answer It is because the filaments of anthers are united in two bundles. Nine out of ten stamens in a pea plant form a staminal tube. The tenth is free. Ray florets of sunflower are described as neuters because both male and female reproductive structures are lacking. Sepals of the salvia are petaloid as 3 sepals are red in color and united as petals. Therefore, they are not differentiated from the petals. Long Answer Type Question 1 Name the different types of androecium found in flowers. Answer The different types of androecium found in flowers are- Polyandrous — When the stamens of a flower are free, the condition is called polyandrous. Monadelphous — When the filaments of anthers in a flower are fused into one group, the condition is called monadelphous. Diadelphous — When the filaments of anthers in a flower are fused into two groups, the condition is called diadelphous. Polyadelphous — When the filaments of anther in a flower are fused into more than two groups the condition is called polyadelphous. Question 2 Name the type of the androecium found in China rose Bombax Pea Answer China rose — The type of androecium found is Monadelphous. Bombax — The type of androecium found is Polyadelphous. Pea — The type of androecium found is Diadelphous. ___________________________________________ i have to memorise all this with kirbo for motivation use kirbo and the power of the bible ok bye
