Help Contact For teachers and institutes

Mock Tests Classes

StemPy Lab

Learn. Solve. Code the solutions. Test yourself.

Live examsFree mock exams, timed and rankedEveryone starts together, and your score and rank come the moment it ends.See the exams →

Learn

Physics
Chemistry
Mathematics
Biology
Python Programming
Statistics & Data Science
Classes
Groups

Practice

Problems
Quizzes
Mock Tests
Prepare for an Exam
Question Sets
Exams
Certificates
Python Labs
AI Practice Generator
Student-Created Tests

Community

Discussions
Resources
Notes
Blog

Account

Log in

© 2026 senLearn. All rights reserved.Help About Contact Privacy Policy Terms of Use Refund Policy

A leaf has 62 stomata in every square millimetre of its… | StemPy Lab

Quizzes
A leaf has 62 stomata in every square millimetre of its lower surface. How many stomata are on 4 square millimetres of that surface?

BiologyMediumHigh School (11–12)Tissues and Organs › Anatomy of Flowering Plants Board Exam A-Level IB

Created by StemPy Lab

A leaf has $62$ stomata in every square millimetre of its lower surface. How many stomata are on $4$ square millimetres of that surface?

← All Quizzes

← On a dry day the blade of a grass leaf rolls inwards and loses less water. Which cells help the leaf to roll up?A mint plant was kept with a candle in a closed jar. After some days the candle could burn again in the jar, which it could not do before the plant was put in. What does this show? →

More onTissues and Organs › Anatomy of Flowering Plants

Discussion (0)

Log in to join the discussion.

Loading…

More questions on this topic

On a dry day the blade of a grass leaf rolls inwards and loses less water. Which cells help the…Hard
A stem section shows vascular bundles scattered all through the ground tissue. Each bundle is…Medium
In the cross-section of a young dicot root, a ring of cells has a waterproof strip in its radial…Medium
A botanist says the plant body is built from three tissue systems. Stomata and hairs on a leaf…Easy
A sieve tube element is alive but has lost its nucleus. Which neighbouring cell controls its…Hard

All questions on this topic →

Problems on this topic

A storm tears open an old neem tree. Its centre is a hollow, but the tree has green leaves and…Hard
A stump shows 24 annual rings. Its radius is 168 mm, and the bark is left out…Medium
Meena looks at a polished slice of a trunk…Easy
A periderm has 12 rows of cork, 1 row of cork cambium and 3 rows of phelloderm…Medium

All problems on this topic →