Questions & Answers
Browse all 20 questions from the
Space Botany and Astro-Agriculture study set below.
Each question shows the correct answer — select a study format above to practice interactively.
1
Which plant was the first to be grown to full maturity and produce seeds in microgravity on the International Space Station?
-
A
Arabidopsis thaliana
-
B
Zinnia hybrida
-
C
Lactuca sativa
-
D
Triticum aestivum
2
What is the primary purpose of the 'Veggie' (Vegetable Production System) plant growth facility on the ISS?
-
A
Tourism marketing
-
B
Fresh food production for crew
-
C
Studying space-based genetic mutations
-
D
Generating oxygen as a primary life support
3
In microgravity, why do plant roots struggle to orient themselves?
-
A
Lack of sunlight
-
B
Lack of gravitational stimulus (gravitropism)
-
C
Extreme atmospheric pressure
-
D
Lack of soil nutrients
4
Which light spectrum is most crucial for photosynthesis in space-grown crops to maximize growth efficiency?
-
A
Green and yellow
-
B
Blue and red
-
C
Ultraviolet
-
D
Infrared
5
What was the first plant species to flower in space, grown on the Salyut-7 space station?
-
A
Arabidopsis
-
B
Tomato
-
C
Arabidopsis thaliana
-
D
Sunflowers
6
How do plants in space receive water since traditional irrigation fails in microgravity?
-
A
Manual spraying
-
B
Hydroponic mats and wicks
-
C
Free-floating water spheres
-
D
High-pressure steam
7
What negative effect does the lack of gravity have on plant cell wall development?
-
A
Increased lignin production
-
B
Reduced cell wall thickening
-
C
Rapid senescence
-
D
Excessive fruit size
8
Which of these is a major challenge in providing CO2 to plants in space environments?
-
A
CO2 is toxic to space stations
-
B
The absence of photosynthesis
-
C
Maintaining proper gas exchange without natural convection
-
D
The scarcity of carbon in space
9
What is the 'Advanced Plant Habitat' (APH) primarily used for on the ISS?
-
A
Commercial flower exports
-
B
Controlled environment plant physiology research
-
C
Studying the effects of vacuum on seeds
-
D
Creating ornamental space gardens
10
In space missions, what is the main reason 'Thale Cress' is frequently used as a model organism?
-
A
It produces edible fruit
-
B
It has a small, well-sequenced genome
-
C
It requires no water
-
D
It grows best in high radiation
11
What phenomenon causes water and nutrients to stay attached to plant roots in microgravity?
-
A
Surface tension
-
B
Magnetic attraction
-
C
Vacuum pressure
-
D
Static electricity
12
Which mission utilized the 'Plant Habitats' to study the gene expression of plants under spaceflight conditions?
-
A
Apollo 11
-
B
ISS Expeditions
-
C
Voyager 1
-
D
Mars Pathfinder
13
What specific plant hormone is investigated in space for its role in 'nastic' movements?
-
A
Auxin
-
B
Ethylene
-
C
Abscisic acid
-
D
Gibberellins
14
What is the primary way scientists test plant resilience to cosmic radiation?
-
A
Exposing seeds to vacuum
-
B
Exposing seeds to high-energy particle accelerators
-
C
Growing them on the Moon
-
D
Genetic modification using Martian soil
15
Which of these plants was successfully harvested for consumption on the ISS in 2015?
-
A
Outredgeous red romaine lettuce
-
B
Commercial strawberries
-
C
Potatoes
-
D
Corn
16
In a space-based hydroponic system, what replaces traditional soil to anchor plant roots?
-
A
Ceramic beads
-
B
Slow-release fertilizer pads and wicks
-
C
Gelatin
-
D
Cotton wool
17
Why are micro-green varieties often selected for space experiments?
-
A
They grow rapidly and require little space
-
B
They require no light
-
C
They grow best in pure nitrogen
-
D
They are resistant to zero gravity
18
The study of plant behavior in response to light in the absence of gravity is known as what?
-
A
Heliotropism
-
B
Phototropism
-
C
Geotropism
-
D
Hydrotropism
19
What is the effect of ionizing space radiation on plant seed germination rates?
-
A
It increases germination significantly
-
B
It often results in DNA damage and lower viability
-
C
It has no effect
-
D
It makes the plants grow larger
20
What component of the space environment is intentionally simulated in the 'Veggie' facility using LEDs?
-
A
Solar irradiance
-
B
Night-time temperature drops
-
C
Planetary gravity
-
D
Atmospheric nitrogen levels
