apical meristem
C1/C2 (Technical)Academic/Scientific/Technical
Definition
Meaning
The region of actively dividing cells at the tips of plant shoots and roots, responsible for primary growth and elongation.
A specialized plant tissue composed of undifferentiated cells (meristematic cells) located at the growing points, which gives rise to all primary plant tissues. It is a key concept in plant developmental biology.
Linguistics
Semantic Notes
Compound noun. The term is highly specific to botany and plant physiology. 'Apical' refers to the tip or apex. 'Meristem' refers to plant tissue consisting of actively dividing cells. It is a count noun (e.g., 'the apical meristems were damaged').
Dialectal Variation
British vs American Usage
Differences
No significant lexical or spelling differences. Pronunciation differences are standard (see IPA).
Connotations
Identical technical connotations in both varieties.
Frequency
Equally low frequency in general language but standard in botanical contexts in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
The apical meristem [VERB] (e.g., produces, divides, is located).Damage to the apical meristem [EFFECT] (e.g., stunts growth).Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “N/A (highly technical term)”
Usage
Context Usage
Business
Virtually never used.
Academic
Core term in botany, plant biology, and horticulture courses and literature.
Everyday
Extremely rare, only among gardening enthusiasts or in educational contexts.
Technical
Essential term in agronomy, forestry, plant research, and botanical descriptions.
Examples
By Part of Speech
verb
British English
- N/A (noun only)
American English
- N/A (noun only)
adverb
British English
- N/A
American English
- N/A
adjective
British English
- N/A (noun only). The adjectival form is 'meristematic', as in 'meristematic cells'.
American English
- N/A (noun only). The adjectival form is 'meristematic', as in 'meristematic activity'.
Examples
By CEFR Level
- Plants grow from special places at their tips.
- The growing tip of a root contains important cells for lengthening the plant.
- The apical meristem is responsible for the primary growth of roots and shoots in vascular plants.
- Auxin concentration gradients established in the apical meristem direct subsequent patterns of cellular differentiation and organ formation.
Learning
Memory Aids
Mnemonic
Think of the APEX (tip) of a plant where cells MERGE and STEM new growth: APICAL MERISTEM.
Conceptual Metaphor
The apical meristem is the plant's **command centre** or **foundation** for upward and downward expansion.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'верхушка' alone; it's specifically 'апикальная меристема'.
- Avoid translating 'meristem' as simply 'ткань'; it's a specific type of formative tissue.
Common Mistakes
- Mispronouncing 'meristem' with stress on the last syllable (/mɛr.ɪˈstem/).
- Using it as an uncountable noun (e.g., 'damage to apical meristem' without article).
Practice
Quiz
What is the primary function of the apical meristem?
FAQ
Frequently Asked Questions
No. The apical meristem is responsible for primary growth (lengthening) at tips. Cambium is a lateral meristem responsible for secondary growth (thickening) in stems and roots.
Yes. Every root and shoot tip has its own apical meristem, so a single plant has many.
Primary growth in that specific shoot or root will be inhibited or stopped, often leading to the activation of lateral buds or meristems.
It is a standard feature of vascular plants (ferns, gymnosperms, angiosperms). Other plant groups like mosses have analogous but structurally different apical cells.