alleryStart learning →What is the protective outer coat of a seed called?
- Testa
- Hilum
- Tegmen
- Raphe
Show answer and solution
Correct answer: A. Testa
The protective outer covering of a seed is known as the testa.
ICSE Class 9 Plant Physiology: seeds and germination — practice questions
Explore 28 free Plant Physiology: seeds and germination questions in ICSE Class 9 Biology. Open each question or exercise to read its content, reference answers and available explanation.
Practise Plant Physiology: seeds and germination with Quill →Plant Physiology: seeds and germination questions and exercises with answers
Showing questions 1–28 of 28.
What is the protective outer coat of a seed called?Read the answer and worked solution →Where does the pollen tube usually enter the ovule?Read the answer and worked solution →Which seed scar marks its point of attachment?Read the answer and worked solution →Which layer forms from the ovule inner integument?Read the answer and worked solution →Which embryonic part grows into the primary root?Read the answer and worked solution →Which embryonic structure becomes the future shoot?Read the answer and worked solution →In monocots, what sheath protects the plumule?Read the answer and worked solution →Which protective sheath surrounds the monocot embryonic root?Read the answer and worked solution →How many cotyledons are present in a dicot embryo?Read the answer and worked solution →What is the single cotyledon of a maize seed called?Read the answer and worked solution →Which term describes seeds that retain endosperm?Read the answer and worked solution →Where do non-endospermic dicots store food reserves?Read the answer and worked solution →Which plants produce exalbuminous seeds at maturity?Read the answer and worked solution →In which dicot species do mature seeds retain endosperm?Read the answer and worked solution →What process causes seed swelling and coat rupture?Read the answer and worked solution →What enzymes activate upon water imbibition?Read the answer and worked solution →Why do germinating seeds require oxygen gas?Read the answer and worked solution →Which embryonic axis elongates in epigeal growth?Read the answer and worked solution →Where are cotyledons carried in epigeal germination?Read the answer and worked solution →How does the hypocotyl hook move the cotyledons?Read the answer and worked solution →Which structure elongates in hypogeal germination?Read the answer and worked solution →What is the fate of cotyledons in hypogeal seeds?Read the answer and worked solution →Which plant germinates anaerobically under water?Read the answer and worked solution →Which plant hormone breaks seed dormancy?Read the answer and worked solution →Match each seed embryonic part with its developmental fate:Read the answer and worked solution →Match each germination type with its defining morphological movement:Read the answer and worked solution →Match each environmental condition essential for germination with its role:Read the answer and worked solution →Match each seed structure with its protective or anatomical function:Read the answer and worked solution →
Worked practice questions
Where does the pollen tube usually enter the ovule?
- Chalaza
- Micropyle
- Funiculus
- Pericarp
Show answer and solution
Correct answer: B. Micropyle
During fertilization the pollen tube typically gains entry through the micropyle.
Which seed scar marks its point of attachment?
- Aril
- Raphe
- Hilum
- Caruncle
Show answer and solution
Correct answer: C. Hilum
The hilum is the distinct scar showing where the seed was attached to the ovary wall.
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