MCQOPTIONS
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MCQOPTIONS
This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Biology knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
Which among the following is not correct about free-central placentation? |
| A. | In basal placentation, ovule is present at base of the ovary |
| B. | In parietal placentation, placenta is swollen at centre and ovules get arranged around it |
| C. | In apical placentation, ovule is present at apex of the ovary |
| D. | Lemon is an example of axial placentation |
| Answer» C. In apical placentation, ovule is present at apex of the ovary | |
| 2. |
Which among the following is incorrect about different types of Placentation? |
| A. | In marginal placentation, placenta develops on the ventral side of an ovary |
| B. | Unlike marginal placentation where ovary is single chambered, in axile placentation ovary is multi-chambered |
| C. | Okra is an example of axial placentation i.e. ovary is multi-chambered and ovules are attached to the central axis |
| D. | Papaya is an example of basal placentation |
| Answer» E. | |
| 3. |
Which among the following is incorrect about Carpel? |
| A. | Basal enclosed part of carpel is called ovary |
| B. | Ovules are attached to cushion like structure called Placenta |
| C. | Stigma is the part of the carpel that receives pollen grain |
| D. | Arrangement of ovules within the ovary is called Aestivation |
| Answer» E. | |
| 4. |
Which among the following statements is incorrect about stamens? |
| A. | In epiphyllous flowers, stamens are attached to perianth |
| B. | Stamens attached to carpels are gynandrous |
| C. | In monoadelphous, all filaments of stamens are bunched and all the stamens are united |
| D. | In polystemonous, stamens are free i.e. they are neither attached to any part of the flower nor to each other |
| Answer» D. In polystemonous, stamens are free i.e. they are neither attached to any part of the flower nor to each other | |
| 5. |
Which among the following is incorrect about stamens? |
| A. | A stamen mainly contains of anther, filament and connective tissue |
| B. | An anther is a bilobed structure present at the tip of filament with each lobe bearing 2 pollen sacs |
| C. | Epipetalous flowers are those flowers in which stamens are attached to petals |
| D. | Sunflower is an example of epiphyllous |
| Answer» E. | |
| 6. |
The inner most whirl in a flower is called Gynoecium and the members of Gynoecium are called carpels. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 7. |
Which among the following is not correct about flower? |
| A. | A flower has 4 whorls arranged successively i.e. calyx, corolla, androecium and gynoecium |
| B. | Members of calyx and corolla are called as sepals and petals respectively |
| C. | In polysepalous, the sepals are arranged in a free manner whereas in gamosepalous, the sepals are united |
| D. | Tulip is an example of polypetalous |
| Answer» E. | |
| 8. |
Which among the following plays a vital role in pollination of pollen grains? |
| A. | Petals |
| B. | Sepals |
| C. | Pedicel |
| D. | Carpel |
| Answer» E. | |
| 9. |
Which among the following is incorrect about racemose and cymose? |
| A. | In racemose inflorescence, the youngest flower remains at the top of floral axis |
| B. | In cymose inflorescence, the floral main axis continues to grow throughout the life |
| C. | In racemose inflorescence, indefinite number of flowers are formed |
| D. | In cymose inflorescence, the axilary branches continue to grow throughout the life |
| Answer» C. In racemose inflorescence, indefinite number of flowers are formed | |
| 10. |
Flower is a modified shoot and is the reproductive organ in a flowering plant. |
| A. | True |
| B. | False |
| Answer» B. False | |