Kingdoms Plantae And Animalia

Pea (Pisum sativum)

Step 1: Family Fabaceae (also called Papilionaceae) is the pea family and includes all pulses. Step 2: Pisum sativum (Pea/Matar) is the classic example of this family, characterised by butterfly-shaped (papilionaceous) flowers. Step 3: Allium cepa (Onion) belongs to family Liliaceae. Step 4: Hibiscus rosa-sinensis (China rose) belongs to family Malvaceae. Step 5: Oryza sativa (Rice) belongs to family Poaceae. So the correct answer is Pea.

Monadelphous

Step 1: In Malvaceae (e.g., China rose), all the stamens are united by their filaments into a single bundle, forming a staminal tube around the style. Step 2: This condition where all stamens are fused into one group is called Monadelphous (mono = one, adelphous = brotherhood/bundle). Step 3: Diadelphous means stamens are in two groups (9+1), as seen in Fabaceae (pea family). Step 4: Polyadelphous refers to stamens arranged in many bundles. Step 5: Syngenesious refers to stamens united by their anthers (as in Asteraceae). So the correct answer is Monadelphous.

Caryopsis

Step 1: Poaceae is the grass family which includes important cereals like rice, wheat, and maize. Step 2: The characteristic fruit of this family is called a caryopsis. Step 3: In a caryopsis, the seed coat (testa) and the ovary wall (pericarp) are inseparably fused together. This is why when you peel a wheat grain, you cannot separate the seed from the outer layer. Step 4: A capsule is the fruit of Liliaceae and Malvaceae. A legume (pod) is the fruit of Fabaceae. A berry is a fleshy fruit. Step 5: So the correct answer is Caryopsis.

Cnidaria

Step 1: Cnidoblasts are special stinging cells that are the defining feature of the phylum Cnidaria. Step 2: These cells are used to capture prey and for defence. Examples of Cnidarians include Hydra, Jellyfish, Sea anemone, and Corals. Step 3: Porifera (sponges) have a canal system and spicules but NO cnidoblasts. Step 4: Platyhelminthes are flat worms with suckers/hooks for attachment but no stinging cells. Step 5: Annelida are segmented worms with setae and nephridia. So the correct answer is Cnidaria.